Influence of Physico-Chemical Parameters on Fish Behavior in Lake Guessabo (Côte d'Ivoire)

Video surveillance is a non-invasive method that allows fish to be observed in their natural habitat without disturbance. This study, conducted in Lake Guessabo, aimed to identify the main activities of fish in order to contribute to better biodiversity conservation. Physico-chemical parameters of the water were measured in situ, and four unbaited cameras were installed between 7:00 a.m. and 6:00 p.m. at two study stations. The results showed that environmental conditions were similar between the stations. Six fish species were recorded, mainly engaging in feeding (84 % at S1 and 100 % at S2) and reproductive (16 % at S1 and 0 % at S2) activities. The species Coptodon zillii stood out for its high level of activity and the diversity of its behaviors. Observations indicated that dissolved oxygen, water transparency, and depth strongly influence feeding and reproductive behaviors. These findings confirm the effectiveness of video surveillance as a tool for studying fish behavior and promoting the sustainable management of aquatic ecosystems.