Common name: sea egg

General information

The West Indian Sea Egg, scientifically known as Tripneustes ventricosus, is a species of sea urchin that is popular among marine aquarium enthusiasts for its grazing habits and unique appearance. This species is characterized by its round, inflated body and short spines, which are typically white or pale in color, giving rise to its other common name, the White Sea Urchin.

Care

In the home aquarium, Tripneustes ventricosus requires a tank with ample space to roam and a good supply of live rock or coral rubble to graze on. They are herbivores and play a crucial role in controlling algae growth. It's important to ensure that the tank has stable water parameters and that there are no aggressive fish that may harm the urchin.

Reproduction

In the wild, Tripneustes ventricosus reproduces by releasing gametes into the water column, where fertilization occurs externally. In the aquarium, breeding is less common, but with optimal conditions, it is possible to observe spawning behavior.

Symbiosis

While not known for a specific symbiotic relationship like clownfish and anemones, sea urchins, in general, contribute to the reef ecosystem by maintaining algae levels and providing a food source for predators.

Habitat

The natural habitat of the West Indian Sea Egg includes coral reefs, seagrass beds, and rocky substrates in the Caribbean Sea and the western Atlantic Ocean. They are typically found at depths ranging from shallow waters to about 30 meters.