Linckia laevigata Breeding Guide: Why It Is Not Home-Bred
The blue Linckia sea star is a planktonic broadcast spawner that is not bred in home aquaria, though it may fragment via autotomy like its congeners.
Overview
Linckia laevigata, the blue sea star, belongs to the order Valvatida, family Ophidiasteridae. It lives in shallow waters of the tropical Indo-Pacific, on coral reefs and seagrass beds. It is among the most recognisable reef sea stars but is notoriously sensitive in captivity.
Reproductive Mode
Like most starfish, Linckia laevigata is gonochoric and reproduces sexually by free spawning: eggs and sperm are released into the water, and the resulting embryos and larvae live as plankton. The larvae pass through bilaterally symmetrical bipinnaria and brachiolaria stages before settling and metamorphosing into juveniles.
Asexual Propagation
Sources note that L. laevigata may be able to reproduce asexually, although this remains poorly documented. The species shows regenerative capacity through autotomy (defensive arm loss), and many wild individuals are seen missing arms or in the comet form. Its congener Linckia multifora is confirmed to produce comets, so blue Linckia is presumed to fragment similarly, but this is not a controllable aquarium technique.
Common Challenges
Captive reproduction is not achieved because the planktonic larvae require open-water dispersal, specific microalgal food and conditions that home systems cannot supply. Beyond breeding, the species itself is difficult to keep alive: it demands a large, mature reef with abundant film algae and detritus and slow drip acclimation.