Pseudoceros cf. prudhoei

A dramatic critter of deep midnight blue–black with a bold sky-blue inner border and a thin yellow outer edge — this flatworm looks like a hall-of-mirrors frame in motion. As it glides across coral rubble, its tricolor margin shimmers, turning each movement into a living piece of neon art.

• Size: Up to 30mm
• Range: Indo-Pacific—recorded in Indonesia, the Philippines, Micronesia, the Maldives, and Australia
• Habitat / Depth: Often seen under stones or on reef rubble in shallow waters; exact depths not frequently reported
• Diet: Presumed carnivorous like many Pseudoceros—feeds on sessile invertebrates (e.g., colonial ascidians)