Yellowfin goatfish (Rob, BBM Explorer / CC BY)
The goatfish (Mullidae) has an elongated body, a deeply forked caudal fin, and two widely separated dorsal fins. Goatfish are typically brightly colored. Two independently movable barbels are used to detect food buried in sandy substrate. The largest species (dash-dot goatfish, Parupeneus barberinus) reaches 50 centimeters (19.7 inches) in length.