Figure 2. Relationship of sound pressure level in dB re: 20 µPa (A), range in dB (B), fundamental frequency (C) and number of grunts (D) to fish weight for male and female oyster toadfish.

Points represent the mean value for each individual except for number of grunts, which is the actual number. There were no sexual differences, and the regression line represents pooled data for males and females.