483
12 Species Case Studies
Fig. 12.33 Size at age (as determined by sagittal otoliths) plot displayed by sex with fi tted von
Bertalanffy growth function curves (sizes at t 0 constrained to 0). Females indicated by circles ,
males by squares with crosses for unsexed fi sh (Redrawn from Choat et al. 2006 ) . With permission
Marine Ecology Progress Series)
Fig. 12.34 When swimming above the reef in courtship posture, male humphead wrasse fold the
caudal fi n so the rays are scissored over one another ( a ) and the head becomes bluish with the
marking around the eye and head much less distinct compared to ( b ) males during non-courting
times (see Figs. 12.31a and 12.32b for comparison) (Photos: Patrick L. Colin)
12 Species Case Studies
Fig. 12.33 Size at age (as determined by sagittal otoliths) plot displayed by sex with fi tted von
Bertalanffy growth function curves (sizes at t 0 constrained to 0). Females indicated by circles ,
males by squares with crosses for unsexed fi sh (Redrawn from Choat et al. 2006 ) . With permission
Marine Ecology Progress Series)
Fig. 12.34 When swimming above the reef in courtship posture, male humphead wrasse fold the
caudal fi n so the rays are scissored over one another ( a ) and the head becomes bluish with the
marking around the eye and head much less distinct compared to ( b ) males during non-courting
times (see Figs. 12.31a and 12.32b for comparison) (Photos: Patrick L. Colin)