Fish

Positive effects of bubbles as a feeding predictor on behaviour of farmed rainbow trout

Occupational enrichment emerges as a promising strategy for improving the welfare of farmed animals. This form of enrichment aims to stimulate cognitive abilities of animals by providing them with more opportunities to interact with and control their environment. Predictability of...

Year Published: 2022Topics: Environmental Enrichment, Husbandry & ManagementAnimal Type: Fish, Trout

Citation: Kleiber, A., Le-Calvez, J. M., Kerneis, T. et al. 2022. Positive effects of bubbles as a feeding predictor on behaviour of farmed rainbow trout. Scientific Reports 12(1), 11368.

An affordable and easy-to-use tool for automatic fish length and weight estimation in mariculture

Common aquaculture practices involve measuring fish biometrics at different growth stages, which is crucial for feeding regime management and for improving farmed fish welfare. Fish measurements are usually carried out manually on individual fish. However, this process is laborious, time-consuming,...

Year Published: 2022Topics: Biological Sampling & Physiological MeasurementAnimal Type: Fish, Other Fish

Citation: Tonachella, N., Martini, A., Martinoli, M. et al. 2022. An affordable and easy-to-use tool for automatic fish length and weight estimation in mariculture. Scientific Reports 12(1), 15642.

The use of sand substrate modulates dominance behaviour and brain gene expression in a flatfish species

Physical complexity adds physical enrichment to rearing conditions. This enrichment promotes fish welfare and reduces detrimental characteristics that fish develop in captivity. Senegalese sole (Solea senegalensis) is an important species for European aquaculture, where it is reared in intensive conditions...

Year Published: 2023Topics: Environmental Enrichment, Social Housing & CompanionshipAnimal Type: Fish, Other Fish

Citation: Almeida, M. M., Cabrita, E., Fatsini, E. 2023. The use of sand substrate modulates dominance behaviour and brain gene expression in a flatfish species. Animals 13(6), 978.

Anesthesia overdose versus rapid cooling for euthanasia of adult zebrafish

The rapid increase in zebrafish use needs to be accompanied by research into the refinement of procedures. The European (EU) Directive lists three possible euthanasia methods for fish: anesthetic overdose, electrical stunning, and concussion. However, for small fish such as...

Year Published: 2022Topics: EuthanasiaAnimal Type: Fish, Zebrafish

Citation: Ferreira, J. M., Félix, L., Jorge, S. et al. 2022. Anesthesia overdose versus rapid cooling for euthanasia of adult zebrafish. Zebrafish 19(4), 148-159.

A rapid and noninvasive method that extracts polymerase chain reaction-ready genomic DNA from adult zebrafish

Genotyping usually entails analysis of the products of polymerase chain reaction (PCR) carried out with genomic DNA (gDNA) as template, and is employed for validation of mutant or transgenic organisms. For genotyping of adult zebrafish, gDNA is often extracted from...

Year Published: 2022Topics: Identification MethodAnimal Type: Fish, Zebrafish

Citation: Jang, J. Y., Liang, T., Kim, M.-K. et al. 2022. A rapid and noninvasive method that extracts polymerase chain reaction-ready genomic DNA from adult zebrafish. Zebrafish 19(4), 160-164.

Long-term body tactile stimulation reduces aggression and improves productive performance in Nile tilapia groups

One concern of the Anthropocene is the effects of human activities on animal welfare, revealing the urgency to mitigate impacts of rearing environments. Body tactile stimulation (TS), like massage therapy, has emerged as an enrichment method to counteract stress and...

Year Published: 2022Topics: Environmental Enrichment, Social Housing & CompanionshipAnimal Type: Fish, Tilapia

Citation: dos Santos Gauy, A. C., Bolognesi, M. C., Gonçalves-de-Freitas, E. 2022. Long-term body tactile stimulation reduces aggression and improves productive performance in Nile tilapia groups. Scientific Reports 12(1), 20239.

Evaluation of six methods for external attachment of electronic tags to fish: Assessment of tag retention, growth and fish welfare

External attachment of electronic tags has been increasingly used in fish studies. Many researchers have used ad hoc attachment methods and provided little or no validation for the assumption that tagging itself does not bias animal behaviour or survival. The...

Year Published: 2022Topics: Identification MethodAnimal Type: Fish, Other Fish

Citation: Runde, B. J., Buckel, J. A., Bacheler, N. M. et al. 2022. Evaluation of six methods for external attachment of electronic tags to fish: Assessment of tag retention, growth and fish welfare. Journal of Fish Biology 101(3), 419-430.

A psychological aversive condition does not change individual zebrafish preference for background color or artificial plant enrichments

Information on fish preference for environmental conditions can be a useful tool to offer them what they want, an important requirement for welfare purposes. Giving that such an approach deals with psychological states of the fish, we investigated whether psychological...

Year Published: 2022Topics: Environmental Enrichment, Housing, PersonalityAnimal Type: Fish, Zebrafish

Citation: Marques Maia, C., Volpato, G. L., Braithwaite, V. A. 2022. A psychological aversive condition does not change individual zebrafish preference for background color or artificial plant enrichments. Journal of Applied Animal Welfare Science 25(4), 427-438.

Care and use of Siamese fighting fish (Betta splendens) for research

Betta splendens, also called Siamese fighting fish or 'betta,' are a popular species in the fishkeeping hobby. Native to South- east Asia, betta have been selectively bred for their fighting ability for hundreds of years, which has resulted in the...

Year Published: 2022Topics: Husbandry & ManagementAnimal Type: Fish, Other Fish

Citation: Lichak, M. R., Barber, J. R., Kwon, Y. M. et al. 2022. Care and use of Siamese fighting fish (Betta splendens) for research. Comparative Medicine 72(3), 169-180.

FELASA-AALAS recommendations for monitoring and reporting of laboratory fish diseases and health status, with an emphasis on zebrafish (Danio rerio)

The exchange of fish for research may expose an aquatic laboratory to pathogen contamination as incoming fish can introduce bacteria, fungi, parasites, and viruses capable of affecting both experimental results and fish and personnel health and welfare. To develop risk...

Year Published: 2022Topics: Husbandry & Management, Welfare AssessmentAnimal Type: Fish, Zebrafish

Citation: Mocho, J.-P., Collymore, C., Farmer, S. C. et al. 2022. FELASA-AALAS recommendations for monitoring and reporting of laboratory fish diseases and health status, with an emphasis on zebrafish (Danio rerio). Comparative Medicine 72(3), 127-148.