Fig. 4. Example of buccal pressures calculated for a prey capture sequence of a 35.2 mm cranial length C. gariepinus. Pressures for three positions inside the buccal cavity (circles), as well as mouth opening (open triangles) and hyoid depression (filled triangles) versus time are given. Note that these calculations are only valid when the opercular and branchiostegal valves are closed (grey background) (i.e. approximately until maximal gape is reached).