Common name: Sand Dollar

General information

The Reticulated Sand Dollar, Clypeaster reticulatus, is a species of sea urchins in the family Clypeasteridae. Unlike their spiny relatives, sand dollars have a flattened, disk-like shape and are often found partially buried in sandy substrates in shallow waters. They are known for their distinctive star-shaped pattern on their exoskeleton, called a test, which is often collected and used for decorative purposes after the animal dies.

Care

In the aquarium, Clypeaster reticulatus requires a tank with a deep sand bed to mimic their natural habitat. They are detritivores, feeding on organic matter within the sand. It's important to maintain excellent water quality and stable parameters, as sand dollars can be sensitive to changes in their environment. They should be kept in a peaceful tank with no aggressive tank mates that might disturb them.

Reproduction

Sand dollars reproduce by releasing eggs and sperm into the water column, a process known as broadcast spawning. In the aquarium, breeding is rare, but with a large enough group and optimal conditions, it is possible to observe spawning behavior.

Habitat

Clypeaster reticulatus is typically found in warm, shallow waters, often in seagrass beds or sandy areas near coral reefs. They play a role in the ecosystem by recycling nutrients as they process organic material in the sand.