This fish eats mollusks. Small snails are cracked between the pharyngeal jaws (within its mouth) while large ones are tackled with the mouth. It crushes snails mainly with its mouth. In the aquarium, it can be observed sucking larger snails from their shells. In the wild, schools of C. rhoadesii numbering several hundred can be found, with a single male showing breeding dress. The other males assume a female coloration. As a group, C. rhoadesii forage across muddy bottoms for mollusks.
Maximum Size: 13"