Synchronized tracks of European catfish over the four winters 2017-2020 in “Etang des Aulnes”

Videos of catfish Silurus glanis Linnaeus, 1758, movements over 15 October - 15 March 2018 to 2021 in “Etang des Aulnes”. Top panel: hourly temperature (at 0.5, 3 and 5 m above the bottom in blue, violet and cyan line, respectively, on the right axis) at the deepest point in the lake, 6 m deep. Bottom panel: tracks of the catfish (a total of 47 individuals have been tracked during these 4 years, size ranging in [727 ; 2150] mm), each represented by a different colour, at each quarter hour. A dot symbolizes the position of a catfish at the indicated date. If available, it is joined to the previous position by a segment, itself joined to the position corresponding to half an hour before. A circle corresponds to the position at the previous quarter hour joined to the position at the previous half of an hour by a segment; a single circle locates the position at the previous half of an hour. The lake background colour symbolizes the bathymetry from 0 to 5.5 m by 0.5 m, the deeper is the blue the deeper is the zone