Fig. 8. Upper panel: cross-correlogram relating Type 2 chirp production with attack counts are given for (A) a single fish (N=16) and (B) between fish (N=10). Only male fish, and trials involving 10 or more chirps and attacks are used in the chirp-attack analysis. 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).