Fig. 5. Archer fish turn so as to minimize the error e with respect to the later point of incidence of prey (see Fig. 1). Evaluation of turning maneuvers in response to prey naturally dislodged by a shot from an initial height h=20 cm (A) or 40 cm (B), which was at the upper boundary of the natural shooting range of the fish. The responses are the same as in Fig 4. For each response the error is plotted against the horizontal take-off velocity _hor of the prey. The mean of the errors e made with respect to the later point of incidence was not significantly different from zero (t-test).