Common name: Pin Cushion Star

General Information

The Pin Cushion Star, scientifically known as Culcita novaeguineae, is a unique and fascinating species of sea star that has captured the interest of marine enthusiasts and aquarists alike. Unlike the typical starfish shape, the Pin Cushion Star is more rounded and resembles a pin cushion, hence its name. This species is native to the Indo-Pacific region, where it inhabits coral reefs and rocky substrates.

Despite its unusual appearance, the Pin Cushion Star plays an important role in the marine ecosystem. It is known for its ability to consume large amounts of coral, which can be both a benefit and a challenge for reef keepers. This species is often sought after by aquarists who appreciate its distinctive look and the intriguing behaviors it displays.

Care

Caring for a Pin Cushion Star requires a well-established marine aquarium with plenty of live rock and a stable environment. These sea stars are relatively hardy but need a mature tank with ample microfauna to graze on. They are best suited for tanks with a minimum volume of 200 liters.

Providing a varied diet is crucial, as Pin Cushion Stars are known to consume coral polyps, algae, and detritus. In captivity, they can be fed small pieces of fish, shrimp, and other marine foods to supplement their diet.

Diet and Feeding

In the wild, Pin Cushion Stars are omnivorous, feeding on coral polyps, algae, and detritus. In captivity, they should be offered a varied diet that includes small pieces of marine fish, shrimp, and specially formulated sea star foods. Feeding should occur every few days, ensuring that they have enough to eat without overfeeding, which can lead to water quality issues.

Behavior and Compatibility

Pin Cushion Stars are generally peaceful creatures, but their tendency to feed on coral polyps makes them unsuitable for many reef aquariums. They are best kept in fish-only tanks or with invertebrates that they do not view as food. While they are not aggressive, their feeding habits can pose a risk to corals and some other invertebrates.

Health and Common Issues

Pin Cushion Stars are generally hardy, but they can be sensitive to changes in water quality. Maintaining stable water parameters is key to their health. They are susceptible to bacterial infections if injured, so handle them with care and avoid exposing them to air for extended periods.

Signs of a healthy Pin Cushion Star include a firm body, vibrant coloration, and active movement across the tank. Watch for any signs of deterioration or inactivity, which could indicate health issues that need to be addressed promptly.

Habitat

Pin Cushion Stars are found in the Indo-Pacific region, thriving in coral reefs and rocky substrates. They prefer warm waters with plenty of hiding spots and a rich supply of food. In captivity, replicating these conditions with stable water temperatures and plenty of live rock will help them thrive.