Fig. 3. Representative pressure traces from three species. Pressure magnitude and timing differed among the species used in this study. For clarity, only L. macrochirus, M. salmoides and P. nigromaculatus are illustrated here. Pressure profiles and magnitudes are similar to those measured in other studies of the same species (Grubich and Wainwright, 1997; Lauder, 1983b; Lauder et al., 1986; Norton and Brainerd, 1993; Sanford and Wainwright, 2002).