Click on image to view larger version.

Fig. 3. Archer fish respond over a large range of angles between their initial
orientation and the take-off direction of the dislodged prey. Distribution of
the absolute values of angles
(inset) between take-off direction of the
prey and the initial orientation of the responding fish. Angles were sampled
at 20° intervals (starting at 10°; see Materials and methods) and
accumulated in histograms normalized so that the total frequency equalled 1.
(A) h=20 cm, N=60 responses; (B) h=40 cm,
N=64 responses. Histograms are based on the responses analyzed in
Figs
4,5,6.