Aquatic habitats are quite divers and vary by natural in sound and light conditions. Man-made sound and
artificial lighting have increased in, on and near aquatic habitats and cause physical, physiological and also
behavioural responses in free-ranging fish species. Captive fishes are also exposed to variation of sound and
light conditions. However, little is known about the effects of sound and light changes on fish spatial
distribution and swimming behaviour in captivity.
