Welfare of Cultured and Experimental Fishes

Edited by
November 2019
132 pages
  • ISBN978-3-03921-710-6 (Paperback)
  • ISBN978-3-03921-711-3 (PDF)

This book is a reprint of the Special Issue Welfare of Cultured and Experimental Fishes that was published in

Biology & Life Sciences
Environmental & Earth Sciences

Welfare is a multidimensional concept that can be described as the state of an animal as it copes with the environment. Captive environments can impact farmed animals at different levels, especially fishes, considering their highly complex sensory world. Understanding the ethology of a species is therefore essential to address fish welfare, and the interpretation of behavioral responses in specific rearing contexts (aquaculture or experimental contexts) demands knowledge of their underlying physiological, developmental, functional, and evolutionary mechanisms. In natural environments, the stress response has evolved to help animals survive challenging conditions. However, animals are adapted to deal with natural stressors, while anthropogenic stimuli may represent stressors that fishes are unable to cope with. Under such circumstances, stress responses may be maladaptive and cause severe damage to the animal. As welfare in captivity is affected in multiple dimensions, multiple possible indicators can be used to assess the welfare state of individuals. In the past, research on welfare has been largely focusing on health indicators and predominantly based on physiological stress. Ethological indicators, however, also integrate the mental perspective of the individual and have been gradually assuming an important role in welfare research: behavioral responses to stressors are an early response to adverse conditions, easily observable, and demonstrative of emotional states. Many behavioral indicators can be used as non-invasive measurements of welfare in practical contexts such as aquaculture and experimentation. Presently, research in fish welfare is growing in importance and interest because of the growing economic importance of fish farming, the comparative biology opportunities that experimental fishes provide, and the increasing public sensitivity to welfare issues.

  • Paperback
© 2020 by the authors; CC BY license
fisheries management; muscle texture; Scyliorhinus canicula; sharks; stress; African catfish (Clarias gariepinus); growth; feed efficiency; elevated phosphate concentrations; welfare; Danio rerio; fractal analysis; nociception; pain; stereotypical behaviour; Danio rerio; structural complexity; aggression; territorial; boldness; fertilisation success; aggressive interaction; social stress; fighting ability; social rank; social communication; aquaculture; Amyloodinium ocellatum; age; physiological response; hematology; histopathology; welfare; fish welfare; ethology; FishEthoBase; risk analysis; welfare scores; welfare criteria; framework; animal behavior; fish welfare; positive welfare; welfare enhancement; negative and positive affect; motivation; n/a