Fish

Pupil size variation as a response to stress in European catfish and its application for social stress detection in albino conspecifics

Hormonal changes such as increased cortisol level in blood plasma in response to stress and social environmental stimuli are common among vertebrates including humans and typically accompanied by other physiological processes, such as changes in body pigmentation and/or pupil dilatation....

Year Published: 2020Topics: Welfare AssessmentAnimal Type: Fish, Other Fish

Citation: Slavík, O., Horký, P., Velíšek, J., et al. 2020. Pupil size variation as a response to stress in European catfish and its application for social stress detection in albino conspecifics. PLOS ONE, 15(12), e0244017.

Juvenile Nile tilapia fish avoid red shelters

Shelters are frequently used for fish rearing to improve welfare conditions. In this study, whether Nile tilapia prefers specific shelter colors was evaluated. Thus, fish preference for white, red, blue, green or yellow shelters was tested. A high variation of...

Year Published: 2021Topics: Environmental EnrichmentAnimal Type: Fish, Tilapia

Citation: Marques Maia, C., Pacheco Capelini Alves, N., Tatemoto, P. 2021. Juvenile Nile tilapia fish avoid red shelters. Journal of Applied Animal Welfare Science, 24(1), 98-106.

A comparison of buffered tricaine methanesulfonate (MS-222) and isoeugenol anesthesia for caudal fin clipping in zebrafish (Danio rerio)

The purpose of this study was to compare the safety and efficacy of buffered tricaine methanesulfonate (MS-222) and isoeugenol for the anesthesia of zebrafish undergoing caudal fin clipping. Eighty 9 mo Danio rerio (AB strain) zebrafish were allocated to one...

Year Published: 2020Topics: Anesthesia & SedationAnimal Type: Fish, Zebrafish

Citation: Musk, G. C., Ezzy, B. J., Kenchington, L. M. et al. 2020. A comparison of buffered tricaine methanesulfonate (MS-222) and isoeugenol anesthesia for caudal fin clipping in zebrafish (Danio rerio). JAALAS 59(6), 732-736.

About welfare and stress in the early stages of fish

In conclusion, the investigations carried out up to now demonstrate that during the early stages fish show high sensitivity to many types of stressors involving an array of responses to overcome alterations that could affect the animal and be transmitted...

Year Published: 2021Topics: Housing, Husbandry & Management, Relocation & TransportAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Ramos, J., Balasch, J. C., Tort, L. 2021. About welfare and stress in the early stages of fish. Frontiers in Veterinary Science 8, 634434.

Effect of tank size on zebrafish behavior and physiology

Environmental conditions strongly affect experimental animals. As a model organism, zebrafish has become important in life science studies. However, the potential effect of living environment on their behavior and physiology is often overlooked. This work aimed to determine whether tank...

Year Published: 2020Topics: HousingAnimal Type: Fish, Zebrafish

Citation: Maierdiyali, A., Wang, L., Luo, Y. et al. 2020. Effect of tank size on zebrafish behavior and physiology. Animals 10(12), 2353.

Anaesthetics and analgesics used in adult fish for research: A review

The number of fish used in research has increased in the last decades. Anaesthesia is required when fish must be held immobile and it is crucial to promote fish welfare, because these vertebrates can show signs of stress and/or pain...

Year Published: 2019Topics: Analgesia, Anesthesia & SedationAnimal Type: Fish, Shark & Ray

Citation: Martins, T., Valentim, A., Pereira, N. et al. 2019. Anaesthetics and analgesics used in adult fish for research: A review. Laboratory Animals 53(4), 325–341.

The effect of environmental colour on the growth, metabolism, physiology and skin pigmentation of the carnivorous freshwater catfish Lophiosilurus alexandri

The growth, physiology and skin pigmentation of pacamã Lophiosilurus alexandri juveniles were evaluated in an experiment using different tank colours (white, yellow, green, blue, brown and black) over an 80-day period. The tank colours did not cause significant differences to...

Year Published: 2017Topics: HousingAnimal Type: Fish, Other Fish

Citation: Costa, D. C., Mattioli, C. C., Silva, W. S. et al. 2017. The effect of environmental colour on the growth, metabolism, physiology and skin pigmentation of the carnivorous freshwater catfish Lophiosilurus alexandri. Journal of Fish Biology 90(3), 922-935.

Measuring cortisol, the major stress hormone in fishes

Stress in teleosts is an increasingly studied topic because of its interaction with growth, reproduction, immune system and ultimately fitness of the animal. Whether it is for evaluating welfare in aquaculture, adaptive capacities in fish ecology, or to investigate effects...

Year Published: 2019Topics: Biological Sampling & Physiological MeasurementAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: McKenzie, D. J., Sadoul, B., Geffroy, B. 2019. Measuring cortisol, the major stress hormone in fishes. Journal of Fish Biology 94(4), 540-555.

Ethical considerations in fish research

In this review, we focus primarily on the refinement of common methods used in fish research based on emerging knowledge with the aim of improving the welfare of fish used in scientific studies. We consider the use of anaesthetics and...

Year Published: 2019Topics: Analgesia, Anesthesia & Sedation, Husbandry & ManagementAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Sloman, K, A., Bouyoucos, I. A., Brooks, E. J. et al. 2019. Ethical considerations in fish research. Journal of Fish Biology 94(4), 556-577.

Non-lethal sampling for stable isotope analysis of pike Esox lucius: How mucus, scale and fin tissue compare to muscle

Stable isotope analysis (SIA) was used to examine the isotopic relationships between dorsal muscle and fin, scale and epidermal mucus in pike Esox lucius. δ13C and δ15N varied predictably within each tissue pairing, with conversion factors calculated for the surrogate...

Year Published: 2019Topics: Biological Sampling & Physiological MeasurementAnimal Type: Fish, Other Fish

Citation: Winter, E. R., Nyqvist, M., Britton, J. R. 2019. Non-lethal sampling for stable isotope analysis of pike Esox lucius: How mucus, scale and fin tissue compare to muscle. Journal of Fish Biology 95(3), 956-958.