Brilliant Flatworm

Overview

The Brilliant Flatworm (Pseudoceros scintillatus) is a striking marine flatworm known for its vivid, high-contrast coloration. Often encountered by divers on coral reefs, this species is frequently observed in tropical Indo-Pacific waters.

Appearance

This flatworm features a velvety black dorsal surface adorned with irregular, pale grey to yellow-green spots. Each spot is distinctively outlined with a white ring, and the entire body is framed by a vibrant orange margin. The animal possesses a pair of simple, upfolded marginal tentacles at the front of its body, which serve as sensory organs to detect chemical cues in its environment.

Distribution & habitat

Pseudoceros scintillatus is widely distributed throughout the tropical Indo-Pacific region, including areas such as Australia, Papua New Guinea, the Philippines, and the southwestern Indian Ocean. It is typically found on reef slopes and reef crests, often hiding under ledges or debris.

Feeding

This species is a predator that feeds primarily on colonial ascidians. It is often found in close proximity to its prey, particularly when sheltering under reef structures.