Fig. 7. Logarithmic plot of peak prey velocities as a function of cranial length (individual maxima of unfiltered data; filled black symbols) and the scaling relationship (least-squares regression with 95% confidence limits) of peak flow velocities (white circles) (from Van Wassenbergh et al., 2006b). C. gariepinus is represented by circles, G. typus by the triangle and C. apus by squares. No significant interspecific differences between C. gariepinus and C. apus were found for the residuals of peak prey velocities with respect to the scaling relationship (ANOVA, P=0.41).