Fig. 7. Graphical representation of the scaling of bite force (A,B) and jaw closing velocity (C,D) versus cranial length in C. gariepinus. Bite force increases with cranial length with a slope of 3 (A), and jaw closing velocity decreases with cranial length with a slope of -0.66 (C). Upon detailed inspection of the graphs, a break point appears to be present at a cranial length of 65 mm (B,D). Analysis of the scaling patterns for the two groups separately indicates a rapid increase in bite force (B; slope=3.92) but no change in jaw closing velocity (note that the trend line in D to the left of the break point is not significantly different from 0) for fish under 65 mm cranial length. Above 65 mm cranial length, bite force increases with a slope of 2.58 and jaw closing velocity decreases with a slope of -0.79.