Blue Linckia Starfish: A Jewel of Coral Reefs

The Blue Linckia Starfish (Linckia laevigata) is one of the most iconic echinoderms found in tropical Indo-Pacific reefs. Known for its vivid blue coloration and five slender arms, this species plays an important ecological role in maintaining reef health.

Physical Characteristics:
Typically reaching 12–30 cm in diameter, Linckia starfish have a rigid calcareous skeleton covered by a thin epidermis. Their striking blue hue comes from specialized pigments that provide camouflage among corals and sponges.

Biology & Behavior:
Like other echinoderms, Linckia exhibits pentamerous symmetry and uses a water vascular system for locomotion and feeding. Tube feet allow slow movement across substrates while aiding in nutrient absorption. They are primarily detritivores, feeding on biofilm and decaying organic matter, contributing to nutrient recycling in reef ecosystems.

Regeneration Ability:
One of Linckia’s most fascinating traits is its ability to regenerate entire arms—and even whole bodies—from a single limb, a survival strategy that ensures persistence despite predation.

Habitat & Care:
Native to shallow reefs, they require stable salinity and temperature in captivity. While hardy in the wild, they can be sensitive to changes in water chemistry, making careful acclimation essential for aquarium success.