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Fig. 8. Slow start of zebrafish larvae. Age post-fertilisation: (A) 2 days; (B) 4
days; (C) 7 days; (D) 14 days. (i) Amplitude envelope of the body wave. Larval
midlines in a fish-based frame of reference for the 3rd tail beat cycle in the
curvature profiles of the right column [time step 2 ms (A), 1 ms (BD)].
Scale bar, 0.5L. In D, the 1st midline of the tail beat cycle is
shown in red and the last midline in blue. (ii) Profiles of specific
curvature. Contours of the specific curvature of the midlines, plotted along
the body axis (x-axis) and in time (y-axis) for two complete
tail beat cycles. The broken, black lines indicate the local curvature
extremes.