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Fig. 2. Midline and centre of mass (red circles) of the fish at 40 ms intervals
from the onset of the response. Head is indicated by the arrow. A and B
correspond to the fast and slow responses, respectively, shown in
Fig. 1. C and D show large
turns achieved by fast and slow responses, respectively. Note the longer time
taken by fish in B and D in order to achieve a similar stage 1 angle as A and
C, respectively.