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Fig. 4
Example trajectories and frames for the heterogeneous shoals in experiment 2.
The top row (a–c) shows trajectories of three control quadruplets and the second row (d–f) shows trajectories of three quadruplets consisting of three control zebrafish and one zebrafish treated with 5 μM MK-801. In panel (d) the trajectory of the zebrafish treated with MK-801 is presented in blue, in panels (e) and (f) they are presented in green. (g) The MK-801 zebrafish often swims far apart from the three control zebrafish. (h) The control zebrafish are frequently seen to follow the MK-801 zebrafish, (i) which often leads to increased distances between the three control zebrafish. The black arrows points to the MK-801 zebrafish.