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Fig. 6. Head location in the flow tank every 5 sec for 1 h (720 data points per
fish), where each color represents an individual (N=4 fish). From top
to bottom; (A) treatment in the light with lateral line intact
(V+L+1), (B) treatment in the dark with lateral line intact
(VL+1, gray fill), (C) treatment in the light with lateral
line blocked (V+L2, red box), and (D) treatment in the dark
with lateral line blocked (VL2, gray fill and red
box). Fish in the light prefer to Kármán gait (A), even in the
absence of a functional lateral line (C). Fish in the dark (B,D) prefer to
entrain regardless of lateral line functionality. Total body lengths of
individual fish are given.