Bicolor Angelfish Identification Guide

Key identification features

• Small pygmy angelfish body, growing to about 6 inches
• Bright yellow coloring across the head and front half of the body
• Deep blue to violet coloring across the rear half and tail base
• Sharp, clean boundary between the yellow and blue sections, with no gradual blending
• Thin blue ring encircling the eye

Common look-alikes

• Coral beauty shows a mottled mix of blue and orange over the whole body rather than one clean split, without a sharp dividing line.
• Half black angelfish has a similar sharp two-tone division, but its rear half is black rather than blue.
• The clean yellow-to-blue split, rather than yellow-to-black or mottled orange-blue, is what confirms a Bicolor Angelfish over its close relatives.

Where you'll see one

Bicolor Angelfish are found on coral-rich reef slopes and in lagoons across the Indo-Pacific, usually alone or in pairs, staying close to shelter such as coral heads or rocky ledges where they can retreat quickly if threatened by a passing predator.