Behavioural response, welfare, and performance of Nile tilapia (Oreochromis niloticus) under different water temperatures
This work was carried out to detect behavioural response, performance and welfare of Nile tilapia fingerlings under different water temperatures. Fingerlings were reared in eight 90-L aquaria in duplicate for 60 days with 15 fish per aquarium at different temperatures (20 °C (group1), 24 °C (group 2), 28 °C (group 3), and 32 °C (group […]
Aggressive behaviour traits predict physiological stress responses in Nile tilapia (Oreochromis niloticus)
This study tested whether aggressive behaviour can predict individual variation in stress responses of Nile tilapia Oreochromis niloticus.We used a mirror test to measure tendency to aggressive behaviour, and calculated the attack frequency and time until the first attack (latency) for each fish. One day later, we measured plasma cortisol and glucose, and two days […]
Dietary self-selection in fish: a new approach to studying fish nutrition and feeding behavior
The principles of modern aquaculture encourage the development of fish feeds containing low fish meal content and several types of plant ingredients plus nutrients to avoid depleting global fish stocks and to reduce costs. However, food constituents can affect animal nutrition and feeding behavior, so the effect of different diets on fish behavior and growth […]