Fig. 9. Upper panel: cross-correlogram relating AFR production with attack counts are given for (A) a single fish (N=19) and (B) between fish (N=16) for all trials involving 10 or more AFRs and attacks. Horizontal line denotes the null distribution. Lower panels: bin-by-bin statistical analysis of the correlograms. The fraction of individual fish in which the corresponding bin height is either greater than expected by chance (P>0.95, black line) or less than expected by chance (P<0.05, grey line).