Other Fish

Recovery of male Siamese fighting fish (Betta splendens) after overland shipping

Ornamental fish shipped by road or rail may spend days in transit without food, leading to a reduction in somatic growth after transportation and during acclimatization. In the present study, a time-series (0, 2, 4, 6, 8, 10, and 12...

Year Published: 2025Topics: Relocation & TransportAnimal Type: Fish, Other Fish

Citation: Thongprajukaew, K., Malawa, S., Poolthajit, S. et al. 2025. Recovery of male Siamese fighting fish (Betta splendens) after overland shipping. Animals 15(14), 2156.

How does food enrichment and the presence of visitors affect the behaviour of two species of freshwater fish in a public aquarium?

Food-based environmental enrichment (EE) is a valuable strategy for stimulating foraging behaviour in fish under human care, as it increases the challenge of food acquisition and encourages prolonged engagement in this activity. Curimbas (Prochilodus argenteus) and pacus (Myleus micans) are...

Year Published: 2025Topics: Environmental EnrichmentAnimal Type: Fish, Other Fish

Citation: Silva, A. A., Azevedo, C. S. de, Cipreste, C. F. et al. 2025. How does food enrichment and the presence of visitors affect the behaviour of two species of freshwater fish in a public aquarium? Journal of Zoological and Botanical Gardens 6(3), 35.

Editorial: Fish welfare in aquaculture and research—where are we going?

Rapid technical developments are taking place in aquaculture, and its production is increasing globally every year by more than 4%. Research is the necessary foundation for politics to define reasonable regulations and recommend guidelines for aquaculture, but also the basis...

Year Published: 2025Topics: Rearing & Weaning, Stocking Density, Welfare AssessmentAnimal Type: Fish, Other Fish, Salmon, Trout, Zebrafish

Citation: Pietsch, C. 2025. Editorial: Fish welfare in aquaculture and research—where are we going? Animals 15(16), 2367.

Pre-transport salt baths mitigate physiological stress and tissue damage in channel catfish (Ictalurus punctatus) fingerlings: evidence from multi-biomarker assessment and histopathology

Effective transport strategies are critical for the survival and welfare of juvenile Ictalurus punctatus, but the effects of pre-transport salt bath treatments remain uncertain. In this study, we systematically evaluated the effects of pre-transport salt bath acclimation at 0‰ (S1),...

Year Published: 2025Topics: Relocation & TransportAnimal Type: Fish, Other Fish

Citation: Huang, G., Li, H., Wang, J. et al. 2025. Pre-transport salt baths mitigate physiological stress and tissue damage in channel catfish (Ictalurus punctatus) fingerlings: Evidence from multi-biomarker assessment and histopathology. Animals 15(15), 2249.

Current research and guidelines for euthanasia in laboratory fish with a focus on fathead minnows

This paper reviews the methods and approaches used to humanely anesthetize (render unconscious) and or euthanize (kill) laboratory fish (in research settings), with a specific focus on the fathead minnow. We surveyed the literature (333 scientific studies published 2004–2021) to...

Year Published: 2025Topics: EuthanasiaAnimal Type: Fish, Other Fish

Citation: Lavalle, C., Clarence, S., Khan, H. et al. 2025. Current research and guidelines for euthanasia in laboratory fish with a focus on fathead minnows. Laboratory Animals 59(3), 319–331.

Insights into thermal sensitivity: Effects of elevated temperature on growth, metabolic rate, and stress responses in Atlantic wolffish (Anarhichas lupus)

The Atlantic wolffish (Anarhichas lupus) is a cold-water fish with potential for aquaculture diversification. To unveil the mechanisms underlying the compromised growth in Atlantic wolffish when reared at higher temperatures, we investigated the relationship between temperature, growth rate, aerobic capacity,...

Year Published: 2025Topics: Husbandry & ManagementAnimal Type: Fish, Other Fish

Citation: Hinchcliffe, J., Roques, J. A. C., Ekström, A. et al. 2025. Insights into thermal sensitivity: Effects of elevated temperature on growth, metabolic rate, and stress responses in Atlantic wolffish (Anarhichas lupus). Journal of Fish Biology 106(1), 61–74.

An adaptable, user-friendly score sheet to monitor welfare in experimental fish

Fish are increasingly used as experimental animals across research fields. Currently, around a quarter of all experimental animals used are fish. Less than 20% of these are standard model species. Welfare assessments for experimental fish are in their infancy compared...

Year Published: 2025Topics: Welfare AssessmentAnimal Type: Fish, Other Fish, Salmon, Shark & Ray, Tilapia, Trout, Zebrafish

Citation: Flueck-Giraud, M., Schmidt-Posthaus, H., Bergadano, A. et al. 2025. An adaptable, user-friendly score sheet to monitor welfare in experimental fish. Laboratory Animals 59(2), 226–241.

Insights from the judgement bias paradigm: Social group and tank size do not affect mental state in female guppies

Optimal holding conditions are key to animal welfare. How stressful husbandry is perceived by the animal can be determined via an assessment of an animal’s mental state – where it is positioned on the continuum between optimistic and pessimistic states...

Year Published: 2025Topics: Housing, Social Housing & Companionship, Welfare AssessmentAnimal Type: Fish, Other Fish

Citation: Epping, J., Kotrschal, A., Kotrschal, S. D. 2025. Insights from the judgement bias paradigm: Social group and tank size do not affect mental state in female guppies. Journal of Fish Biology 106(1), 12–19.

Effects of social enrichment induced by different-sized groups and live bait on growth, aggressive behavior, physiology, and neurogenesis in juvenile Sebastes schlegelii (2025)

This study examined the effects of stress and social enrichment on fish neuroplasticity and antioxidant capacity, addressing growing concerns about fish welfare in aquaculture. A 2 × 2 × 2 factorial design comprising eight treatment groups was implemented to investigate...

Year Published: 2025Topics: Social Housing & CompanionshipAnimal Type: Fish, Other Fish

Citation: Zhang, Z., Yu, X., Wu, Z. et al. 2025. Effects of social enrichment induced by different-sized groups and live bait on growth, aggressive behavior, physiology, and neurogenesis in juvenile Sebastes schlegelii. Fishes 10(5), 242.

Using a length-weight relationship based on wild lumpfish (Cyclopterus lumpus L

The use of lumpfish (Cyclopterus lumpus L.) as cleaner fish in Atlantic salmon aquaculture has emerged as a promising solution to combat the issue of sea lice infestation, as they have proven effective under the right conditions. The aquaculture industry,...

Year Published: 2024Topics: Welfare AssessmentAnimal Type: Fish, Other Fish

Citation: Østerø, S. L., Toro, J. D., Homrum, E. í et al. 2024. Using a length-weight relationship based on wild lumpfish (Cyclopterus lumpus L.) for estimation of body condition of lumpfish in salmon cages. PLOS ONE 19(11), e0310924.