Linda's Flatworm

Overview

Linda's flatworm (Pseudoceros lindae) is a striking marine flatworm known for its vibrant coloration and distinct markings. It is a benthic species that is primarily active during the day, often seen crawling openly across reef environments.

Appearance

This species features an elongated, thick, and fleshy body that can reach up to 8 cm in length. Its dorsal surface typically displays a rich burgundy or wine-colored background, adorned with a variable number of golden-yellow spots. The margins of the body are often turquoise or blue, sometimes featuring a fine white border. Two prominent, folded pseudo-tentacles are located at the anterior end, which are typically marked with white and blue. Some individuals may also exhibit a thin, orange longitudinal line running down the center of the body.

Distribution & habitat

Linda's flatworm is widely distributed across the tropical Indo-Pacific region, ranging from the eastern coast of Africa, including Madagascar and Mayotte, through Indonesia and the Philippines, to the Great Barrier Reef in Australia. It is commonly found on reef slopes, often residing under ledges.

Biology & behavior

As a simultaneous hermaphrodite, this flatworm possesses both male and female reproductive organs. It is a diurnal creature that moves confidently across the substrate, a behavior often attributed to its aposematic (warning) coloration, which may deter potential predators. Its diet consists exclusively of colonial ascidians.