{ "version": "https://jsonfeed.org/version/1.1", "title": "Vetofish News", "description": "Scientific, veterinary and regulatory updates for aquatic-animal professionals.", "home_page_url": "https://www.vetofish.com/en/news/", "feed_url": "https://www.vetofish.com/en/news/feed.json", "language": "en-GB", "authors": [ { "name": "Vetofish", "url": "https://www.vetofish.com" } ], "items": [ { "id": "https://www.vetofish.com/en/news/indicateurs-bien-etre-bar-europeen/", "url": "https://www.vetofish.com/en/news/indicateurs-bien-etre-bar-europeen/", "title": "European seabass: which welfare indicators matter?", "content_text": "For sea-caged European seabass, useful welfare monitoring combines mortality, health, behaviour and water quality without mistaking consensus for validation.", "summary": "For sea-caged European seabass, useful welfare monitoring combines mortality, health, behaviour and water quality without mistaking consensus for validation.", "image": "https://www.vetofish.com/images/news/actualite-indicateurs-bien-etre-bar-europeen-16x9.webp", "date_published": "2026-08-02T00:00:00.000Z", "tags": [ "Aquaculture", "European seabass", "fish welfare", "operational welfare indicators", "sea cages", "water quality", "feeding behaviour" ] }, { "id": "https://www.vetofish.com/en/news/gephyrine-myelination-axones-poisson-zebre/", "url": "https://www.vetofish.com/en/news/gephyrine-myelination-axones-poisson-zebre/", "title": "Zebrafish gephyrin helps myelin choose its axons", "content_text": "In larval zebrafish, oligodendrocytes use a protein best known from inhibitory synapses to influence axon-class targeting and restrain myelin sheath length.", "summary": "In larval zebrafish, oligodendrocytes use a protein best known from inhibitory synapses to influence axon-class targeting and restrain myelin sheath length.", "image": "https://www.vetofish.com/images/news/actualite-gephyrine-myelination-axones-poisson-zebre-16x9.webp", "date_published": "2026-07-29T00:00:00.000Z", "tags": [ "Research facilities", "zebrafish", "myelin", "oligodendrocytes", "gephyrin", "GABAergic axons", "confocal imaging" ] }, { "id": "https://www.vetofish.com/en/news/requins-taureaux-commerce-aquariums-tracabilite/", "url": "https://www.vetofish.com/en/news/requins-taureaux-commerce-aquariums-tracabilite/", "title": "Sand tiger shark trade tests aquarium traceability", "content_text": "A review documents rising sand tiger shark collections in Delaware Bay and calls for population assessment, lifelong traceability and demonstrable conservation returns for every permit.", "summary": "A review documents rising sand tiger shark collections in Delaware Bay and calls for population assessment, lifelong traceability and demonstrable conservation returns for every permit.", "image": "https://www.vetofish.com/images/news/actualite-requins-taureaux-commerce-aquariums-tracabilite-16x9.webp", "date_published": "2026-07-28T00:00:00.000Z", "tags": [ "Public aquariums", "sand tiger shark", "public aquariums", "international trade", "Delaware Bay", "animal traceability", "shark conservation" ] }, { "id": "https://www.vetofish.com/en/news/anguilles-argentees-loire-predation-barrage/", "url": "https://www.vetofish.com/en/news/anguilles-argentees-loire-predation-barrage/", "title": "Loire silver eels: low predation, but a dam-related signal", "content_text": "Acoustic tracking of 80 silver eels in the Loire basin found little predation, but all four sensor activations followed passage of the Châtellerault dam.", "summary": "Acoustic tracking of 80 silver eels in the Loire basin found little predation, but all four sensor activations followed passage of the Châtellerault dam.", "image": "https://www.vetofish.com/images/news/actualite-anguilles-argentees-loire-predation-barrage-16x9.webp", "date_published": "2026-07-27T00:00:00.000Z", "tags": [ "Environment", "European eel", "silver eel migration", "European catfish", "Loire basin", "acoustic telemetry", "hydropower barriers" ] }, { "id": "https://www.vetofish.com/en/news/densite-poissons-macrophytes-etangs-dombes/", "url": "https://www.vetofish.com/en/news/densite-poissons-macrophytes-etangs-dombes/", "title": "Fish density shapes aquatic plants in French ponds", "content_text": "Across 38 French and Belgian fishponds, higher fish densities were associated with lower macrophyte richness, informing production–biodiversity trade-offs.", "summary": "Across 38 French and Belgian fishponds, higher fish densities were associated with lower macrophyte richness, informing production–biodiversity trade-offs.", "image": "https://www.vetofish.com/images/news/actualite-densite-poissons-macrophytes-etangs-dombes-16x9.webp", "date_published": "2026-07-27T00:00:00.000Z", "tags": [ "Environment", "French fishponds", "common carp", "aquatic macrophytes", "fish stocking density", "freshwater biodiversity", "extensive pond farming" ] }, { "id": "https://www.vetofish.com/en/news/ratio-epa-dha-alevins-saumon-alphavirus/", "url": "https://www.vetofish.com/en/news/ratio-epa-dha-alevins-saumon-alphavirus/", "title": "EPA/DHA balance shapes salmon fry growth and viral response", "content_text": "Atlantic salmon fry given equal total EPA and DHA in three different proportions showed distinct growth and disease outcomes after a salmonid alphavirus challenge.", "summary": "Atlantic salmon fry given equal total EPA and DHA in three different proportions showed distinct growth and disease outcomes after a salmonid alphavirus challenge.", "image": "https://www.vetofish.com/images/news/actualite-ratio-epa-dha-alevins-saumon-alphavirus-16x9.webp", "date_published": "2026-07-27T00:00:00.000Z", "tags": [ "Aquaculture", "Atlantic salmon", "EPA and DHA", "first-feeding fry", "salmonid alphavirus", "aquafeed formulation", "fish health" ] }, { "id": "https://www.vetofish.com/en/news/adn-environnemental-poissons-guyane-bibliotheque-12s/", "url": "https://www.vetofish.com/en/news/adn-environnemental-poissons-guyane-bibliotheque-12s/", "title": "French Guiana fish gain a near-complete 12S library", "content_text": "A new 12S reference library covers almost 89% of French Guiana’s freshwater fish fauna, strengthening species identification in environmental DNA surveys.", "summary": "A new 12S reference library covers almost 89% of French Guiana’s freshwater fish fauna, strengthening species identification in environmental DNA surveys.", "image": "https://www.vetofish.com/images/news/actualite-adn-environnemental-poissons-guyane-bibliotheque-12s-16x9.webp", "date_published": "2026-07-26T00:00:00.000Z", "tags": [ "Environment", "environmental DNA", "12S metabarcoding", "French Guiana fish", "reference library", "aquatic biodiversity", "ecological monitoring" ] }, { "id": "https://www.vetofish.com/en/news/fronts-oceaniques-barrieres-pecheries/", "url": "https://www.vetofish.com/en/news/fronts-oceaniques-barrieres-pecheries/", "title": "Ocean fronts can divide fisheries as well as attract them", "content_text": "A global analysis shows that thermal fronts often separate fishing activity between warm and cold waters, an effect obscured when fronts are treated only as aggregation zones.", "summary": "A global analysis shows that thermal fronts often separate fishing activity between warm and cold waters, an effect obscured when fronts are treated only as aggregation zones.", "image": "https://www.vetofish.com/images/news/actualite-fronts-oceaniques-barrieres-pecheries-16x9.webp", "date_published": "2026-07-26T00:00:00.000Z", "tags": [ "Environment", "ocean fronts", "fish distribution", "fishing activity", "sea-surface temperature", "thermal habitat", "spatial management" ] }, { "id": "https://www.vetofish.com/en/news/sema4ab-regeneration-moelle-poisson-zebre/", "url": "https://www.vetofish.com/en/news/sema4ab-regeneration-moelle-poisson-zebre/", "title": "Zebrafish: more new neurons do not guarantee better recovery", "content_text": "After spinal cord injury, disrupting sema4ab doubles progenitor and neuron production in zebrafish but reduces axon regrowth and swimming recovery.", "summary": "After spinal cord injury, disrupting sema4ab doubles progenitor and neuron production in zebrafish but reduces axon regrowth and swimming recovery.", "image": "https://www.vetofish.com/images/news/actualite-sema4ab-regeneration-moelle-poisson-zebre-16x9.webp", "date_published": "2026-07-25T00:00:00.000Z", "tags": [ "Research facilities", "zebrafish", "spinal cord injury", "microglia", "regenerative neurogenesis", "Sema4ab", "locomotor recovery" ] }, { "id": "https://www.vetofish.com/en/news/biodiversite-vegetale-guppys-bien-etre/", "url": "https://www.vetofish.com/en/news/biodiversite-vegetale-guppys-bien-etre/", "title": "Guppies: can plant diversity improve welfare?", "content_text": "Guppies housed with plants showed favourable behavioural indicators, while lower basal cortisol occurred only in the treatment containing three plant species.", "summary": "Guppies housed with plants showed favourable behavioural indicators, while lower basal cortisol occurred only in the treatment containing three plant species.", "image": "https://www.vetofish.com/images/news/actualite-biodiversite-vegetale-guppys-bien-etre-16x9.webp", "date_published": "2026-07-24T00:00:00.000Z", "tags": [ "Public aquariums", "guppy welfare", "plant diversity", "aquarium enrichment", "basal cortisol", "habitat design", "public aquarium husbandry" ] }, { "id": "https://www.vetofish.com/en/news/enrichissement-tactile-dorade-stress/", "url": "https://www.vetofish.com/en/news/enrichissement-tactile-dorade-stress/", "title": "Gilthead seabream: assessing tactile enrichment with care", "content_text": "A 21-day trial linked voluntary passage through soft strands with fewer aggressive displays and a reduced acute stress response in gilthead seabream.", "summary": "A 21-day trial linked voluntary passage through soft strands with fewer aggressive displays and a reduced acute stress response in gilthead seabream.", "image": "https://www.vetofish.com/images/news/actualite-enrichissement-tactile-dorade-stress-16x9.webp", "date_published": "2026-07-23T00:00:00.000Z", "tags": [ "Aquaculture", "gilthead seabream", "tactile enrichment", "fish welfare", "stress response", "cortisol", "aggressive behaviour" ] }, { "id": "https://www.vetofish.com/en/news/turbines-hydrocinetiques-comportement-truites/", "url": "https://www.vetofish.com/en/news/turbines-hydrocinetiques-comportement-truites/", "title": "Hydrokinetic turbines: how do juvenile trout respond?", "content_text": "In a laboratory flume, juvenile trout passed small hydrokinetic turbines while adjusting their swimming behaviour to the wake and social setting.", "summary": "In a laboratory flume, juvenile trout passed small hydrokinetic turbines while adjusting their swimming behaviour to the wake and social setting.", "image": "https://www.vetofish.com/images/news/actualite-turbines-hydrocinetiques-comportement-truites-16x9.webp", "date_published": "2026-07-23T00:00:00.000Z", "tags": [ "Environment", "hydrokinetic turbines", "juvenile rainbow trout", "fish passage", "shoaling behaviour", "turbine wake", "environmental assessment" ] }, { "id": "https://www.vetofish.com/en/news/rechauffement-biomasse-poissons-limites-thermiques/", "url": "https://www.vetofish.com/en/news/rechauffement-biomasse-poissons-limites-thermiques/", "title": "Warmer oceans are redistributing fish biomass", "content_text": "An analysis of 33,990 populations separates the erosion linked to long-term warming from rapid shifts during warm years and marine heatwaves.", "summary": "An analysis of 33,990 populations separates the erosion linked to long-term warming from rapid shifts during warm years and marine heatwaves.", "image": "https://www.vetofish.com/images/news/actualite-rechauffement-biomasse-poissons-limites-thermiques-16x9.webp", "date_published": "2026-07-22T00:00:00.000Z", "tags": [ "Environment", "ocean warming", "fish biomass", "marine heatwaves", "thermal range edges", "fisheries management", "ecological monitoring" ] }, { "id": "https://www.vetofish.com/en/news/solvants-tests-comportementaux-larves-poisson-zebre/", "url": "https://www.vetofish.com/en/news/solvants-tests-comportementaux-larves-poisson-zebre/", "title": "Zebrafish assays: the solvent can alter behaviour", "content_text": "A seven-solvent study shows that the vehicle can alter zebrafish larval locomotion and confound behavioural results unless controls are carefully designed.", "summary": "A seven-solvent study shows that the vehicle can alter zebrafish larval locomotion and confound behavioural results unless controls are carefully designed.", "image": "https://www.vetofish.com/images/news/actualite-solvants-tests-comportementaux-larves-poisson-zebre-16x9.webp", "date_published": "2026-07-21T00:00:00.000Z", "tags": [ "Research facilities", "organic solvents", "zebrafish larvae", "locomotor activity", "vehicle controls", "light-dark assay", "experimental reproducibility" ] }, { "id": "https://www.vetofish.com/en/news/microbiome-eau-aquariums-surveillance-dysbiose/", "url": "https://www.vetofish.com/en/news/microbiome-eau-aquariums-surveillance-dysbiose/", "title": "Public aquariums: what the water microbiome can reveal", "content_text": "A longitudinal survey of six freshwater exhibits shows how water microbiome profiles may complement health surveillance without replacing clinical assessment or targeted diagnostics.", "summary": "A longitudinal survey of six freshwater exhibits shows how water microbiome profiles may complement health surveillance without replacing clinical assessment or targeted diagnostics.", "image": "https://www.vetofish.com/images/news/actualite-microbiome-eau-aquariums-surveillance-dysbiose-16x9.webp", "date_published": "2026-07-20T00:00:00.000Z", "tags": [ "Public aquariums", "aquarium water microbiome", "aquatic health surveillance", "16S sequencing", "microbial dysbiosis", "opportunistic bacteria", "exhibit maintenance" ] }, { "id": "https://www.vetofish.com/en/news/desinfection-oeufs-salmonides-risques-viraux/", "url": "https://www.vetofish.com/en/news/desinfection-oeufs-salmonides-risques-viraux/", "title": "Salmonid eggs: where surface disinfection stops", "content_text": "Iodophor treatment reduces viral contamination on salmonid egg surfaces, but it must remain part of a documented, multi-barrier hatchery biosecurity plan.", "summary": "Iodophor treatment reduces viral contamination on salmonid egg surfaces, but it must remain part of a documented, multi-barrier hatchery biosecurity plan.", "image": "https://www.vetofish.com/images/news/actualite-desinfection-oeufs-salmonides-risques-viraux-16x9.webp", "date_published": "2026-07-19T00:00:00.000Z", "tags": [ "Aquaculture", "salmonid eggs", "iodophor disinfection", "hatchery biosecurity", "viral haemorrhagic septicaemia", "infectious haematopoietic necrosis", "batch traceability" ] }, { "id": "https://www.vetofish.com/en/news/chytrides-amphibiens-catalogne-temperature-pressions-humaines/", "url": "https://www.vetofish.com/en/news/chytrides-amphibiens-catalogne-temperature-pressions-humaines/", "title": "Chytrid surveillance in Catalonia: looking beyond visible amphibian outbreaks", "content_text": "A survey of 3,253 wild amphibians links Batrachochytrium dendrobatidis detection with temperature and human disturbance, without establishing causation.", "summary": "A survey of 3,253 wild amphibians links Batrachochytrium dendrobatidis detection with temperature and human disturbance, without establishing causation.", "image": "https://www.vetofish.com/images/news/actualite-chytrides-amphibiens-catalogne-temperature-pressions-humaines-16x9.webp", "date_published": "2026-07-18T00:00:00.000Z", "tags": [ "Environment", "amphibian chytridiomycosis", "Batrachochytrium dendrobatidis", "wildlife disease surveillance", "midwife toad tadpoles", "human disturbance", "Mediterranean amphibians" ] }, { "id": "https://www.vetofish.com/en/news/cryptocaryon-hydroxychloroquine-quarantaine-aquarium/", "url": "https://www.vetofish.com/en/news/cryptocaryon-hydroxychloroquine-quarantaine-aquarium/", "title": "Marine ich and hydroxychloroquine: an intriguing case, not yet a treatment protocol", "content_text": "A 2025 case report describes rapid clinical improvement in nine marine fish after hydroxychloroquine exposure. Its uncontrolled design makes it a prompt for stronger diagnostics, quarantine and drug monitoring—not a dose to copy.", "summary": "A 2025 case report describes rapid clinical improvement in nine marine fish after hydroxychloroquine exposure. Its uncontrolled design makes it a prompt for stronger diagnostics, quarantine and drug monitoring—not a dose to copy.", "image": "https://www.vetofish.com/images/news/actualite-cryptocaryon-hydroxychloroquine-quarantaine-aquarium-16x9.webp", "date_published": "2026-07-18T00:00:00.000Z", "tags": [ "Public aquariums", "Cryptocaryon irritans", "marine fish quarantine", "aquarium therapeutics", "wet-mount diagnosis", "collection biosecurity" ] }, { "id": "https://www.vetofish.com/en/news/danionella-comportement-collectif-thyroide-atpase/", "url": "https://www.vetofish.com/en/news/danionella-comportement-collectif-thyroide-atpase/", "title": "Danionella cerebrum links thyroid signalling to schooling behaviour", "content_text": "Whole-brain RNA sequencing, CRISPR perturbations and T3 exposure identify a thyroid–klf9–ATPase pathway associated with aggregation and alignment in Danionella cerebrum.", "summary": "Whole-brain RNA sequencing, CRISPR perturbations and T3 exposure identify a thyroid–klf9–ATPase pathway associated with aggregation and alignment in Danionella cerebrum.", "image": "https://www.vetofish.com/images/news/actualite-danionella-comportement-collectif-thyroide-atpase-16x9.webp", "date_published": "2026-07-18T00:00:00.000Z", "tags": [ "Research facilities", "Danionella cerebrum", "schooling behaviour", "thyroid signalling", "whole-brain RNA sequencing", "CRISPR screening", "social neurobiology" ] }, { "id": "https://www.vetofish.com/en/news/peche-electrique-lesions-vertebrales-salmonides/", "url": "https://www.vetofish.com/en/news/peche-electrique-lesions-vertebrales-salmonides/", "title": "Electrofishing teams must account for overlapping electrical fields", "content_text": "A field study in Idaho found frequent, externally hidden spinal injuries in salmonids and measured pulse multiplication when three unsynchronised backpack electrofishers worked in overlapping fields.", "summary": "A field study in Idaho found frequent, externally hidden spinal injuries in salmonids and measured pulse multiplication when three unsynchronised backpack electrofishers worked in overlapping fields.", "image": "https://www.vetofish.com/images/news/actualite-peche-electrique-lesions-vertebrales-salmonides-16x9.webp", "date_published": "2026-07-18T00:00:00.000Z", "tags": [ "Environment", "scientific electrofishing", "spinal injury", "Rainbow Trout", "Mountain Whitefish", "overlapping electrical fields", "river fish monitoring" ] }, { "id": "https://www.vetofish.com/en/news/vaccin-oral-nodavirus-lactococcus-bar-asiatique/", "url": "https://www.vetofish.com/en/news/vaccin-oral-nodavirus-lactococcus-bar-asiatique/", "title": "An edible bacterial carrier advances oral vaccination against fish nodavirus", "content_text": "Virus-like nodavirus particles carried inside Lactococcus lactis reduced brain viral load in orally vaccinated Asian seabass, offering a promising but still experimental platform.", "summary": "Virus-like nodavirus particles carried inside Lactococcus lactis reduced brain viral load in orally vaccinated Asian seabass, offering a promising but still experimental platform.", "image": "https://www.vetofish.com/images/news/actualite-vaccin-oral-nodavirus-lactococcus-bar-asiatique-16x9.webp", "date_published": "2026-07-18T00:00:00.000Z", "tags": [ "Aquaculture", "viral nervous necrosis", "oral fish vaccines", "Asian seabass health", "Lactococcus vaccine carrier", "virus-like particles", "hatchery biosecurity" ] }, { "id": "https://www.vetofish.com/en/news/xenope-reproduction-naturelle-raffinement-3r/", "url": "https://www.vetofish.com/en/news/xenope-reproduction-naturelle-raffinement-3r/", "title": "Breeding Xenopus without hormone injections: can simulated rain refine embryo production?", "content_text": "A study involving twelve Xenopus laevis obtained embryos by simulating spring and rainfall rather than injecting hCG. The feasibility signal is encouraging, but refinement and reduction still require comparative measurement.", "summary": "A study involving twelve Xenopus laevis obtained embryos by simulating spring and rainfall rather than injecting hCG. The feasibility signal is encouraging, but refinement and reduction still require comparative measurement.", "image": "https://www.vetofish.com/images/news/actualite-xenope-reproduction-naturelle-raffinement-3r-16x9.webp", "date_published": "2026-07-18T00:00:00.000Z", "tags": [ "Research facilities", "Xenopus laevis breeding", "natural amplexus", "procedure refinement", "3Rs in amphibian research", "research animal husbandry" ] }, { "id": "https://www.vetofish.com/en/news/anesthesie-poissons-sauvages-recuperation-marquage/", "url": "https://www.vetofish.com/en/news/anesthesie-poissons-sauvages-recuperation-marquage/", "title": "Wild fish anaesthesia: recovery continues long after release", "content_text": "Whole-lake telemetry shows that tagged fish may need several days to resume behaviour comparable with controls, long after equilibrium has returned.", "summary": "Whole-lake telemetry shows that tagged fish may need several days to resume behaviour comparable with controls, long after equilibrium has returned.", "image": "https://www.vetofish.com/images/news/actualite-anesthesie-poissons-sauvages-recuperation-marquage-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Environment", "wild fish welfare", "acoustic telemetry", "fish tagging", "MS-222 sedation", "electro-immobilisation", "post-release behaviour" ] }, { "id": "https://www.vetofish.com/en/news/biodiversite-stabilite-communautes-poissons-rivieres/", "url": "https://www.vetofish.com/en/news/biodiversite-stabilite-communautes-poissons-rivieres/", "title": "River fish communities: diversity can buffer human pressure", "content_text": "An analysis of 1,105 sites finds that species diversity and habitat mosaics can dampen fluctuations in river fish communities exposed to human pressure.", "summary": "An analysis of 1,105 sites finds that species diversity and habitat mosaics can dampen fluctuations in river fish communities exposed to human pressure.", "image": "https://www.vetofish.com/images/news/actualite-biodiversite-stabilite-communautes-poissons-rivieres-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Environment", "freshwater fish", "river biodiversity", "community stability", "human footprint", "habitat connectivity", "long-term monitoring" ] }, { "id": "https://www.vetofish.com/en/news/cev-temperature-stress-carp/", "url": "https://www.vetofish.com/en/news/cev-temperature-stress-carp/", "title": "Carp oedema virus: temperature and stress reshape disease expression", "content_text": "An experimental study links viral load, gill damage and physiological stress in koi exposed to carp oedema virus, with sharply different responses at 12 and 18°C.", "summary": "An experimental study links viral load, gill damage and physiological stress in koi exposed to carp oedema virus, with sharply different responses at 12 and 18°C.", "image": "https://www.vetofish.com/images/news/actualite-cev-temperature-stress-carp-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Aquaculture", "carp oedema virus", "koi sleepy disease", "gill health", "thermal stress", "carp biosecurity" ] }, { "id": "https://www.vetofish.com/en/news/echographie-oeufs-requin-zebre/", "url": "https://www.vetofish.com/en/news/echographie-oeufs-requin-zebre/", "title": "Zebra shark eggs: ultrasound reveals the embryo without opening the case", "content_text": "Ultrasound monitoring of 120 zebra shark eggs clarifies when embryos and abnormalities may be detected, while showing why the images must remain cautious decision-support tools.", "summary": "Ultrasound monitoring of 120 zebra shark eggs clarifies when embryos and abnormalities may be detected, while showing why the images must remain cautious decision-support tools.", "image": "https://www.vetofish.com/images/news/actualite-echographie-oeufs-requin-zebre-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Public aquariums", "zebra shark breeding", "veterinary ultrasonography", "embryo monitoring", "shark egg cases", "aquarium reproduction", "elasmobranch conservation" ] }, { "id": "https://www.vetofish.com/en/news/euthanasie-electrique-poisson-zebre/", "url": "https://www.vetofish.com/en/news/euthanasie-electrique-poisson-zebre/", "title": "In-tank electrical euthanasia for zebrafish still needs further validation", "content_text": "A study tested electrical euthanasia of adult zebrafish groups in their housing tanks, finding that performance depended on tank volume and stocking level.", "summary": "A study tested electrical euthanasia of adult zebrafish groups in their housing tanks, finding that performance depended on tank volume and stocking level.", "image": "https://www.vetofish.com/images/news/actualite-euthanasie-electrique-poisson-zebre-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Research facilities", "zebrafish welfare", "electrical euthanasia", "aquatic research facilities", "alternating current", "in-tank stunning", "3Rs refinement" ] }, { "id": "https://www.vetofish.com/en/news/microalgues-huile-poisson-truite-sante/", "url": "https://www.vetofish.com/en/news/microalgues-huile-poisson-truite-sante/", "title": "Rainbow trout feeds: replacing fish oil with microalgae needs evidence, not assumptions", "content_text": "An 84-day rainbow trout trial found no detectable health penalty when Tetraselmis chui biomass replaced part of the fish-oil fraction, but commercial validation still requires longer, farm-specific testing.", "summary": "An 84-day rainbow trout trial found no detectable health penalty when Tetraselmis chui biomass replaced part of the fish-oil fraction, but commercial validation still requires longer, farm-specific testing.", "image": "https://www.vetofish.com/images/news/actualite-microalgues-huile-poisson-truite-sante-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Aquaculture", "microalgae aquafeeds", "fish oil replacement", "rainbow trout nutrition", "intestinal health", "feed formulation trials" ] }, { "id": "https://www.vetofish.com/en/news/mycobacteries-aquariums-diagnostic-protection/", "url": "https://www.vetofish.com/en/news/mycobacteries-aquariums-diagnostic-protection/", "title": "Mycobacteria in public aquariums: diagnose without overclaiming", "content_text": "A study of diseased aquarium fish shows why culture, molecular identification, clinical context and staff protection must be interpreted together.", "summary": "A study of diseased aquarium fish shows why culture, molecular identification, clinical context and staff protection must be interpreted together.", "image": "https://www.vetofish.com/images/news/actualite-mycobacteries-aquariums-diagnostic-protection-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Public aquariums", "fish mycobacteriosis", "Mycobacterium marinum", "aquarium diagnostics", "collection biosecurity", "occupational zoonosis" ] }, { "id": "https://www.vetofish.com/en/news/mycobacterium-haemophilum-poisson-zebre/", "url": "https://www.vetofish.com/en/news/mycobacterium-haemophilum-poisson-zebre/", "title": "Mycobacterium haemophilum in zebrafish: diagnosing beyond appearances", "content_text": "This fastidious mycobacterium can cause systemic disease in laboratory zebrafish and persist in biofilms, calling for integrated fish and environmental surveillance.", "summary": "This fastidious mycobacterium can cause systemic disease in laboratory zebrafish and persist in biofilms, calling for integrated fish and environmental surveillance.", "image": "https://www.vetofish.com/images/news/actualite-mycobacterium-haemophilum-poisson-zebre-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Research", "zebrafish health", "Mycobacterium haemophilum", "laboratory animal biosecurity", "molecular diagnostics", "aquatic biofilms", "colony surveillance" ] }, { "id": "https://www.vetofish.com/en/news/spironucleus-salmonicida-desinfection-ras/", "url": "https://www.vetofish.com/en/news/spironucleus-salmonicida-desinfection-ras/", "title": "Spironucleus in salmon RAS: UV inactivates the parasite, but transmission remains uncertain", "content_text": "A new Atlantic salmon study measures Spironucleus salmonicida sensitivity to UV, while a RAS biosecurity trial that remained negative even in untreated controls exposes the limits of prevention claims.", "summary": "A new Atlantic salmon study measures Spironucleus salmonicida sensitivity to UV, while a RAS biosecurity trial that remained negative even in untreated controls exposes the limits of prevention claims.", "image": "https://www.vetofish.com/images/news/actualite-spironucleus-salmonicida-desinfection-ras-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Aquaculture", "Atlantic salmon health", "Spironucleus salmonicida", "recirculating aquaculture systems", "UV disinfection", "ozone treatment", "aquaculture biosecurity" ] }, { "id": "https://www.vetofish.com/en/news/tumeurs-poissons-aquarium-diagnostic/", "url": "https://www.vetofish.com/en/news/tumeurs-poissons-aquarium-diagnostic/", "title": "Tumours in public-aquarium fish: observe, sample and diagnose without jumping to conclusions", "content_text": "A retrospective study describes 63 tumours in 62 fish from 37 species and shows why a visible mass requires longitudinal records, purposeful imaging and histological confirmation.", "summary": "A retrospective study describes 63 tumours in 62 fish from 37 species and shows why a visible mass requires longitudinal records, purposeful imaging and histological confirmation.", "image": "https://www.vetofish.com/images/news/actualite-tumeurs-poissons-aquarium-diagnostic-16x9.webp", "date_published": "2026-07-17T00:00:00.000Z", "tags": [ "Public aquariums", "fish tumours", "public aquarium medicine", "fish biopsy", "aquatic histopathology", "ageing aquarium populations" ] }, { "id": "https://www.vetofish.com/en/news/sutures-balises-acoustiques-requins/", "url": "https://www.vetofish.com/en/news/sutures-balises-acoustiques-requins/", "title": "Acoustic tags in sharks: should every incision be sutured?", "content_text": "In Port Jackson sharks, suturing internal-tag incisions reduced protrusion risk but increased inflammation and bacterial colonisation, revealing a protocol trade-off rather than a universal rule.", "summary": "In Port Jackson sharks, suturing internal-tag incisions reduced protrusion risk but increased inflammation and bacterial colonisation, revealing a protocol trade-off rather than a universal rule.", "image": "https://www.vetofish.com/images/news/actualite-sutures-balises-acoustiques-requins-16x9.webp", "date_published": "2026-07-16T00:00:00.000Z", "tags": [ "Environment", "acoustic telemetry", "Port Jackson shark", "wound healing", "surgical sutures", "research animal welfare" ] }, { "id": "https://www.vetofish.com/en/news/biosecurite-introduction-poissons-recherche/", "url": "https://www.vetofish.com/en/news/biosecurite-introduction-poissons-recherche/", "title": "New fish colonies: a biosecurity framework for research facilities", "content_text": "FELASA–AALAS recommendations provide a structured way to introduce fish colonies while protecting health status, staff safety and the reliability of research.", "summary": "FELASA–AALAS recommendations provide a structured way to introduce fish colonies while protecting health status, staff safety and the reliability of research.", "image": "https://www.vetofish.com/images/news/actualite-biosecurite-introduction-poissons-recherche-16x9.webp", "date_published": "2026-07-15T00:00:00.000Z", "tags": [ "Research", "aquatic facility biosecurity", "fish quarantine", "laboratory fish colonies", "epidemiological units", "occupational zoonoses" ] }, { "id": "https://www.vetofish.com/en/news/evaluation-reflexes-ramp-poissons/", "url": "https://www.vetofish.com/en/news/evaluation-reflexes-ramp-poissons/", "title": "RAMP assessments: reading fish condition before release", "content_text": "A standardised set of reflex observations can provide a rapid field measure of fish vitality, provided the protocol is validated for the species and release context.", "summary": "A standardised set of reflex observations can provide a rapid field measure of fish vitality, provided the protocol is validated for the species and release context.", "image": "https://www.vetofish.com/images/news/actualite-evaluation-reflexes-ramp-poissons-16x9.webp", "date_published": "2026-07-15T00:00:00.000Z", "tags": [ "Environment", "RAMP assessment", "fish release", "reflex impairment", "delayed mortality", "fisheries monitoring" ] }, { "id": "https://www.vetofish.com/en/news/iridovirus-aciv-e-esturgeons/", "url": "https://www.vetofish.com/en/news/iridovirus-aciv-e-esturgeons/", "title": "AcIV-E in sturgeon: surveillance for an elusive virus", "content_text": "A study across eight Italian farms documents AcIV-E circulation and the diagnostic challenge posed by non-specific signs and the lack of routine cell culture.", "summary": "A study across eight Italian farms documents AcIV-E circulation and the diagnostic challenge posed by non-specific signs and the lack of routine cell culture.", "image": "https://www.vetofish.com/images/news/actualite-iridovirus-aciv-e-esturgeons-16x9.webp", "date_published": "2026-07-15T00:00:00.000Z", "tags": [ "Aquaculture", "AcIV-E surveillance", "sturgeon farming", "molecular diagnostics", "aquaculture biosecurity", "juvenile sturgeon mortality" ] }, { "id": "https://www.vetofish.com/en/news/ph-intracellulaire-regeneration-poisson-zebre/", "url": "https://www.vetofish.com/en/news/ph-intracellulaire-regeneration-poisson-zebre/", "title": "Zebrafish reveal a pH sequence during tissue regeneration", "content_text": "A fluorescent biosensor tracks an early fall and sustained rise in intracellular pH as the amputated zebrafish larval tail begins to regenerate.", "summary": "A fluorescent biosensor tracks an early fall and sustained rise in intracellular pH as the amputated zebrafish larval tail begins to regenerate.", "image": "https://www.vetofish.com/images/news/actualite-ph-intracellulaire-regeneration-poisson-zebre-16x9.webp", "date_published": "2026-07-15T00:00:00.000Z", "tags": [ "Research", "zebrafish model", "tissue regeneration", "intracellular pH", "fluorescent biosensor", "cell signalling" ] }, { "id": "https://www.vetofish.com/en/news/visiteurs-enrichissement-alimentaire-poissons/", "url": "https://www.vetofish.com/en/news/visiteurs-enrichissement-alimentaire-poissons/", "title": "Public aquariums: measuring how visitors affect fish", "content_text": "A two-species study shows how food enrichment, competition and visitor attendance can interact with fish behaviour in a public aquarium exhibit.", "summary": "A two-species study shows how food enrichment, competition and visitor attendance can interact with fish behaviour in a public aquarium exhibit.", "image": "https://www.vetofish.com/images/news/actualite-visiteurs-enrichissement-alimentaire-poissons-16x9.webp", "date_published": "2026-07-15T00:00:00.000Z", "tags": [ "Public aquariums", "visitor effect", "food enrichment", "fish behaviour", "aquarium welfare", "behavioural monitoring" ] }, { "id": "https://www.vetofish.com/en/news/microhabitats-enrichissement-poissons-aquarium/", "url": "https://www.vetofish.com/en/news/microhabitats-enrichissement-poissons-aquarium/", "title": "Public aquariums: habitat choice becomes measurable fish enrichment", "content_text": "Research at the Tennessee Aquarium shows how flow, depth and substrate shape fish space use, turning microhabitat choice into evidence-based enrichment.", "summary": "Research at the Tennessee Aquarium shows how flow, depth and substrate shape fish space use, turning microhabitat choice into evidence-based enrichment.", "image": "https://www.vetofish.com/images/news/actualite-microhabitats-enrichissement-poissons-aquarium-16x9.webp", "date_published": "2026-07-14T00:00:00.000Z", "tags": [ "Public aquariums", "environmental enrichment", "microhabitats", "behaviour", "animal welfare", "stream fish" ] }, { "id": "https://www.vetofish.com/en/news/pfas-poissons-bioindication-sante-ecosystemes/", "url": "https://www.vetofish.com/en/news/pfas-poissons-bioindication-sante-ecosystemes/", "title": "PFAS in wild fish: connecting contamination with ecosystem health", "content_text": "A US field study combines PFAS measurements in wild fish with tissue pathology and molecular responses, offering a practical model for integrated aquatic surveillance.", "summary": "A US field study combines PFAS measurements in wild fish with tissue pathology and molecular responses, offering a practical model for integrated aquatic surveillance.", "image": "https://www.vetofish.com/images/news/actualite-pfas-poissons-bioindication-sante-ecosystemes-16x9.webp", "date_published": "2026-07-14T00:00:00.000Z", "tags": [ "Environment", "PFAS", "ecotoxicology", "biomonitoring", "wild fish", "environmental surveillance" ] }, { "id": "https://www.vetofish.com/en/news/poisson-zebre-conditions-elevage-reproductibilite/", "url": "https://www.vetofish.com/en/news/poisson-zebre-conditions-elevage-reproductibilite/", "title": "Zebrafish reproducibility starts with housing and husbandry", "content_text": "A 20-laboratory study shows how noise, transport, feeding and stocking density can shape zebrafish behavioural outcomes.", "summary": "A 20-laboratory study shows how noise, transport, feeding and stocking density can shape zebrafish behavioural outcomes.", "image": "https://www.vetofish.com/images/news/actualite-poisson-zebre-conditions-elevage-reproductibilite-16x9.webp", "date_published": "2026-07-14T00:00:00.000Z", "tags": [ "Research facilities", "zebrafish", "reproducibility", "behaviour", "housing conditions", "aquatic facilities" ] }, { "id": "https://www.vetofish.com/en/news/vaccination-orale-aeromonas-poisson-chat/", "url": "https://www.vetofish.com/en/news/vaccination-orale-aeromonas-poisson-chat/", "title": "Oral vaccination offers a new route against Aeromonas in farmed catfish", "content_text": "An experimental killed bacterial vaccine delivered in feed improved channel catfish survival after Aeromonas challenge, highlighting both the promise and constraints of oral boosters.", "summary": "An experimental killed bacterial vaccine delivered in feed improved channel catfish survival after Aeromonas challenge, highlighting both the promise and constraints of oral boosters.", "image": "https://www.vetofish.com/images/news/actualite-vaccination-orale-aeromonas-poisson-chat-16x9.webp", "date_published": "2026-07-14T00:00:00.000Z", "tags": [ "Aquaculture", "oral vaccination", "Aeromonas hydrophila", "channel catfish", "immunity", "disease prevention" ] }, { "id": "https://www.vetofish.com/en/news/bien-etre-poissons-11-indicateurs-elevage/", "url": "https://www.vetofish.com/en/news/bien-etre-poissons-11-indicateurs-elevage/", "title": "Fish welfare: 11 indicators for aquaculture farms", "content_text": "A new European framework highlights 11 practical indicators to monitor farmed fish welfare, detect early warning signs and improve daily decisions on farms.", "summary": "A new European framework highlights 11 practical indicators to monitor farmed fish welfare, detect early warning signs and improve daily decisions on farms.", "image": "https://www.vetofish.com/images/news/actualite-aquaculture-indicateurs-bien-etre-16x9.webp", "date_published": "2026-07-13T00:00:00.000Z", "tags": [ "Aquaculture", "animal welfare", "welfare indicators", "fish farming", "monitoring", "husbandry" ] }, { "id": "https://www.vetofish.com/en/news/eclairage-aquariums-preserver-nuit/", "url": "https://www.vetofish.com/en/news/eclairage-aquariums-preserver-nuit/", "title": "Aquarium lighting: protecting the biological night", "content_text": "Night-time lighting in public aquariums can alter rest, behaviour and reproduction. Practical controls can preserve natural light-dark cycles.", "summary": "Night-time lighting in public aquariums can alter rest, behaviour and reproduction. Practical controls can preserve natural light-dark cycles.", "image": "https://www.vetofish.com/images/news/actualite-aquariums-bien-etre-16x9.webp", "date_published": "2026-07-13T00:00:00.000Z", "tags": [ "Public aquariums", "lighting", "circadian rhythms", "animal welfare", "photoperiod", "light pollution" ] } ] }