Monrovia Doctorfish

Overview

The Monrovia Doctorfish (Acanthurus monroviae) is a marine ray-finned fish native to the eastern Atlantic Ocean, ranging from Morocco to Angola. It is a member of the surgeonfish family, characterized by its distinct, sharp, erectile spine located on either side of the caudal peduncle.

Appearance

This species features an oval, laterally compressed body that is typically brown or greyish in color. A key identifying mark is the bright orange-yellow patch surrounding the caudal spine. Adults often display fine, wavy, horizontal light blue lines across the head and body, and the upper margin of the operculum is yellow. The caudal fin is lunate, often with a whitish rear margin.

Distribution & habitat

While primarily found along the tropical coast of western Africa, the species has been recorded in various parts of the Mediterranean Sea, including southern Spain, Tunisia, Algeria, Israel, and Greece. It typically inhabits rocky and coral substrates, as well as coastal waters, estuaries, and river mouths.

Biology & behavior

Monrovia Doctorfish are often observed in small groups or schools, though they may also be encountered individually. Like other surgeonfish, they use their sharp caudal spines for defense. Their reproductive cycle involves planktonic eggs and larvae. They are generally considered harmless to humans, though the caudal spine should be avoided due to its sharpness.