Holocentrus tigrinus Bloch, 1790 Serranus tigrinus, the harlequin bass, is a species of marine ray-finned fish, a sea bass from the subfamily Serraninae, which is a part of the family Serranidae, which also includes the groupers and the anthias.

Serranus tigrinus has a laterally compressed elongate body with a pointed snout which is shorter than the diameter of the eye.

[2] Serranus tigrinus is a species of the western Atlantic Ocean where it is found throughout the Caribbean from southern Florida to Trinidad and Tobago, including the mainland coast from the Yucatan Peninsula of Mexico to Venezuela.

[1] Serranus tigrinus is normally encountered as individuals or in pairs in the rocky parts of reefs or where there is scattered coral.

[1] It is a carnivorous species, and hunts by drawing prey, usually small crustaceans, into its large mouth and swallowing it whole.