Trout

Finding the “golden stocking density”: A balance between fish welfare and farmers’ perspectives

The effects of stocking density on fish welfare are complex and involve many interacting parameters. This complex relationship between fish welfare, stocking density and influencing factors make it challenging to define a specific optimal (“golden”) stocking density. Indeed, previously published...

Year Published: 2022Topics: Stocking DensityAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Saraiva, J. L., Rachinas-Lopes, P., Arechavala-Lopez, P. 2022. Finding the “golden stocking density”: A balance between fish welfare and farmers' perspectives. Frontiers in Veterinary Science 9, 930221.

Exploiting animal personality to reduce chronic stress in captive fish populations

Chronic stress is a major source of welfare problems in many captive populations, including fishes. While we have long known that chronic stress effects arise from maladaptive expression of acute stress response pathways, predicting where and when problems will arise...

Year Published: 2022Topics: PersonalityAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Prentice, P. M., Houslay, T. M., Wilson, A. J. 2022. Exploiting animal personality to reduce chronic stress in captive fish populations. Frontiers in Veterinary Science 9, 1046205.

What is it like to be a bass? Red herrings, fish pain and the study of animal sentience

Debates around fishes' ability to feel pain concern sentience: do reactions to tissue damage indicate evaluative consciousness (conscious affect), or mere nociception? Thanks to Braithwaite's research leadership, and concerns that current practices could compromise welfare in countless fish, this issue's...

Year Published: 2022Topics: Biological Sampling & Physiological Measurement, Emotion, Pain, & SentienceAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Mason, G. J., Lavery, J. M. 2022. What is it like to be a bass? Red herrings, fish pain and the study of animal sentience. Frontiers in Veterinary Science 9, 788289.

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.

Gills just want to have fun: Can fish play games, just like us?

It is common to observe play in dogs, cats, and birds, but have we been ignoring play in one of the most common house pets of all… fish? Aquarium fish are often used as meditative decoration in family households, but...

Year Published: 2022Topics: Natural BehaviorAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Eisenbeiser, S., Serbe-Kamp, É., Gage, G. J. et al. 2022. Gills just want to have fun: Can fish play games, just like us? Animals 12(13), 1684.

Clarification of early end-points for refinement of animal experiments, with specific reference to fish

Appropriate end-points are integral to the refinement of laboratory animal experiments. Our recent experience has highlighted that ambiguity around end-points is hampering their adoption in experiments that cause severe suffering to fish. In toxicology, the term endpoint (single word) refers...

Year Published: 2021Topics: Humane Endpoint, Welfare AssessmentAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Ellis, T., Katsiadaki, I. 2021. Clarification of early end-points for refinement of animal experiments, with specific reference to fish. Laboratory Animals 55(3), 244-253.

Multi-approach assessment for stress evaluation in rainbow trout females, Oncorhynchus mykiss (Walbaum, 1792) from three different farms during the summer season

Blood biochemistry parameters are valuable tools for monitoring fish health. Their baseline values are still undefined for a multitude of farmed fish species. In this study, changes in the blood profile of rainbow trout females (Oncorhynchus mykiss) from three farms...

Year Published: 2021Topics: Welfare AssessmentAnimal Type: Fish, Trout

Citation: Uiuiu, P., Lațiu, C., Păpuc, T. et al. 2021. Multi-approach assessment for stress evaluation in rainbow trout females, Oncorhynchus mykiss (Walbaum, 1792) from three different farms during the summer season. Animals 11(6), 1810.

Refining housing, husbandry and care for animals used in studies involving biotelemetry

Biotelemetry can contribute towards reducing animal numbers and suffering in disciplines including physiology, pharmacology and behavioural research. However, the technique can also cause harm to animals, making biotelemetry a ‘refinement that needs refining'. Current welfare issues relating to the housing...

Year Published: 2014Topics: External Bodily EquipmentAnimal Type: All/General, Amphibian, Baboon, Bird, Capuchin, Cat, Cattle, Cephalopod, Chicken, Chimpanzee, Chinchilla, Crocodile & Alligator, Crustacean, Dog, Equine, Ferret, Finch, Fish, Fowl, Frog & Toad, Gerbil, Gibbon, Goat, Guinea Pig, Hamster, Insect & Spider, Invertebrate, Lemur, Lizard, Macaque, Marine Mammal, Marmoset, Mink, Mole Rat, Mouse, Nonhuman Primate, Other Animal, Other Bird, Other Fish, Other Invertebrate, Other Nonhuman Primate, Other Rodent, Owl Monkey, Parrot, Pig, Rabbit, Rat, Reptile, Rodent, Salamander, Salmon, Shark & Ray, Sheep, Snake, Squirrel Monkey, Tilapia, Trout, Turtle & Tortoise, Vervet (African Green Monkey), Zebrafish

Citation: Hawkins, P. 2014. Refining housing, husbandry and care for animals used in studies involving biotelemetry. Animals 4(2), 361-373.

Laterality and fish welfare – A review

Humans interact with fishes in many contexts including aquaculture, scientific study and companion animals. In all of these contexts, fish welfare can be compromised through anthropogenic means. Concern for fish welfare has grown considerably in recent years, with many states...

Year Published: 2021Topics: Welfare AssessmentAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Berlinghieri, F., Panizzon, P., Penry-Williams, I. L. et al. 2021. Laterality and fish welfare - A review. Applied Animal Behaviour Science 236, 105239.

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.