Linckia

Linckia is a genus of starfish belonging to the family Ophidiasteridae. These brightly colored starfish are commonly known as “comet starfish” or “blue starfish”.

Fragile Star, Pacific Comet Sea Star, Variable Sea Star. – Linckia columbiae

Multi-pore Sea Star, Spotted Linckia – Linckia multifora

Characteristics

Linckia starfish are easily recognized by their five arms, which can regenerate if lost. They possess a distinctive, star-shaped body with a central disc and radiating arms. Unlike many other starfish, Linckia species lack pedicellariae (small, pincer-like appendages). Their skin is covered in tiny, granular ossicles (bone-like plates) that provide support.

Distribution and Habitat

Linckia starfish are widely distributed in tropical and subtropical waters of the Indo-Pacific region, including the Red Sea, the Indian Ocean, and the Pacific Ocean. They are typically found in coral reefs, lagoons, and seagrass beds.

Ecology

Linckia starfish are primarily detritivores, feeding on decaying organic matter such as algae and dead animals. They are also known to scavenge on carrion. Their unique feeding behavior allows them to play an important role in maintaining the health of coral reef ecosystems by removing dead organic matter.

Common Species

Several species of Linckia are commonly recognized, including:

  • Linckia laevigata (Common starfish)
  • Linckia multifora (Blue starfish)
  • Linckia guildingi (Guilding's starfish)
  • Linckia columbiae (Columbia's starfish)

References

For further information on Linckia, please refer to these reliable sources: