Other Fish

Head up displays are a submission signal in the group-living daffodil cichlid

Dominance hierarchies can reduce conflict within social groups and agonistic signals can help to establish and maintain these hierarchies. Behaviours produced by subordinates in response to aggression are often assumed to function as signals of submission, however, these behaviours may...

Year Published: 2020Topics: Natural BehaviorAnimal Type: Fish, Other Fish

Citation: Ruberto, T., Talbot, J. L., Reddon, A. R. 2020. Head up displays are a submission signal in the group-living daffodil cichlid. Behavioural Processes 181, 104271.

Impact of environmental enrichment and social group size in the aggressiveness and foraging activity of Serrapinnus notomelas

Fish are widely used in scientific research, and many species are bred for ornamental purposes and human consumption. Despite the large number of fish kept in captivity, research on the welfare of these animals has only recently intensified. One commonly...

Year Published: 2020Topics: Environmental EnrichmentAnimal Type: Fish, Other Fish

Citation: da Silva, A., Lima, M. R., Meletti, P. C. et al. 2020. Impact of environmental enrichment and social group size in the aggressiveness and foraging activity of Serrapinnus notomelas. Applied Animal Behaviour Science 224, 104943.

Malawi cichlids: A colorful 4th R story

This article describes the successful rehoming of 60 Malawi cichlids from a vivarium at Stanford University to San Diego Zoo and the California Academy of Sciences.

Year Published: 2020Topics: Relocation & TransportAnimal Type: Fish, Other Fish

Citation: Chu, D. 2020. Malawi cichlids: A colorful 4th R story. Laboratory Animal Science Professional 8(3) (May/June), 24-25.

Habituation with apparatus and group testing improves assessment of fish preferences

Preference tests are commonly used to assess fish behavior and cognition in several research fields. This study aimed to investigate how fish perform in a preference test involving extended habituation to the apparatus, which was expected to reduce stress. We...

Year Published: 2025Topics: Behavioral & Cognitive TestingAnimal Type: Fish, Other Fish

Citation: Varracchio, C., Paci, F. P., Bertolucci, C. et al. 2025. Habituation with apparatus and group testing improves assessment of fish preferences. Journal of Fish Biology 107(4), 1149–1158.

Non-invasive ultrasound measurements for determination of hepato-somatic index in Greenland halibut (Reinhardtius hippoglossoides)

Hepato-somatic index (HSI) is widely used to indicate fish body condition and level of energy reserves related to feeding/physiology and reproduction. HSI is traditionally obtained by dissection and measurement of liver mass versus body mass, but ultrasound technology may provide...

Year Published: 2025Topics: Welfare AssessmentAnimal Type: Fish, Other Fish

Citation: Schilling, J. W., Hussey, N. E., Hedges, K. J. et al. 2025. Non-invasive ultrasound measurements for determination of hepato-somatic index in Greenland halibut (Reinhardtius hippoglossoides). Journal of Fish Biology 107(4), 1313–1322.

Environmental enrichment with aquatic plants: Impact of the environment of choice on performance of bettas

This study aimed to evaluate the choice between environments with aquatic plants and the impact of the environment of choice on the performance of bettas (Betta splendens). First, the choice between environments with natural and artificial plants was evaluated. Adult...

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

Citation: Bender, M., Oliveira dos Santos Neves, N., Regina Delziovo, F. et al. 2025. Environmental enrichment with aquatic plants: Impact of the environment of choice on performance of bettas. Journal of Applied Animal Welfare Science 28(4), 740–749.

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.