Fig. 1

Behavioral inter-individual variability in a population of 48 larval zebrafish. a Example 20-min trajectories for the same larval group recorded at 5–8 dpf. a’ Trajectories from four specific larvae zoomed from A. a” Population variability in activity and radial index of the same group at 5–8 dpf. Each ellipse represents the behavioral intra-individual variability for each single fish as described in “Methods”. Colors as in a and a’. a”’ Probability density of finding an individual with a given mean activity and radial index at 5–8 dpf. b Radial index vs activity at 7 dpf of the same group. c Correlation of activity (blue) and radial index (red) between 7 and 8 dpf for the same group. d Median of intra-individual variability (red) and inter-individual variability (blue) for activity (left) and radial index (right) during the time course of the experiments