Family

Common name: Cowries

Cypraeidae

Cypraeidae, commonly known as cowries, are a family of marine gastropods that are highly prized by both collectors and aquarium enthusiasts for their distinctive glossy and colorful shells. These mollusks are found in tropical and subtropical seas worldwide, often inhabiting coral reefs and rocky intertidal zones. Their smooth, shiny shells with vibrant patterns and colors make them a popular choice for ornamental purposes in aquariums.

Cowries have a unique shell shape that is oval and domed, with a long, narrow opening on the underside. The shell's surface is often polished to a high gloss, which is a result of the cowrie's mantle extending over the shell and secreting a layer of calcium carbonate. This feature not only adds to their aesthetic appeal but also provides protection against predators.

In the wild, cowries are primarily nocturnal, emerging at night to feed on algae, sponges, and other small organisms. In captivity, they can be fed a diet of dried seaweed, algae wafers, and other suitable marine foods. It is important for hobbyists to ensure that the aquarium environment closely mimics their natural habitat, with plenty of hiding spots and a stable, well-maintained water quality.

Cowries also play a role in the ecosystem as grazers, helping control algae growth on reefs. However, some species can be quite sensitive to changes in water conditions, so they require careful monitoring and maintenance. When adding cowries to a reef tank, it’s essential to research the specific species, as some cowries may have particular care requirements or may not be compatible with certain tank mates.