Figure 1.

Diversity of the skull in the Cichlidae (a-h) and Labridae (i-p). (a) Rhamphochromis macrophthalmus, a piscivore, (b) Haplochromis euchilus, a digger in sand, (c) Labidochromis vellicans, a picker of small arthropods, (d) Lethrinops brevis, a digger in sand, (e) Petrotilapia tridentiger, a rock scraper, (f) Labeotropheus fuelleborni, an algal-eating rock scraper, (g) Haplochromis similis, a leaf chopper, (h) Genyochromis mento, a scale eater, (i) Cheilinus celebicus, feeds on small fishes and invertebrates, (j) Hemigymnus melapterus, feeds on invertebrates in sand, (k) Anampses geographicus, feeds on small hard-shelled invertebrates, (l) Epibulus insidiator, engulfs crustaceans and small fishes, (m) Chlorurus microrhinos, feeds on the epilithic algal matrix of coral reefs, (n) Siphonognathus argyrophanes, feeds on small invertebrates picked from weeds or the substratum, (o) Gomphosus varius, feeds on small benthic crustaceans, (p) Labrichthys unilineatus, a coral-polyp eater. Drawings of cichlids modified from Fryer & Iles [59].