What is "caracanthus"

Caracanthus, the coral crouchers, or orbicular velvetfishes, are a genus of scorpaeniform fishes. They live in coral reefs of the tropical Indo-Pacific. This genus is the only member of the family Caracanthidae.

Like their close relatives the velvetfishes, they have compressed bodies and a velvety skin. They have small pectoral fins, which they use to wedge themselves into crevices in the coral, and greatly reduced pelvic fins.