Common name: Hooded Snails

The genus Opeatostoma, commonly known as Hooded Snails, belongs to the family Fasciolariidae, which includes spindle snails, tulip snails, and their relatives. These marine gastropods are known for their elongated, spindle-shaped shells with intricate patterns and a distinctive "hooded" appearance near the aperture. This unique feature is what gives them their common name and makes them a fascinating addition to marine aquariums for hobbyists who appreciate unusual mollusks.

Hooded Snails are typically found in sandy or rocky substrates in shallow tropical and subtropical waters. They are carnivorous, preying on smaller invertebrates, and are equipped with a radula, a specialized feeding organ that allows them to scrape or drill into their prey. Their predatory nature means they may not be suitable for reef tanks with small, delicate invertebrates, but they can thrive in species-specific or fish-only systems where their dietary needs can be met without harming other tank inhabitants.

In captivity, Hooded Snails require stable water parameters. They are relatively hardy but sensitive to sudden changes in water quality, so consistent maintenance is key. Their shells can be a striking focal point in the aquarium, but care should be taken to provide a substrate that allows them to burrow naturally, mimicking their natural habitat.

These snails are not commonly seen in the aquarium trade, making them a rare and intriguing choice for advanced hobbyists. Their unique appearance and predatory behavior can add a dynamic element to a marine setup, but potential keepers should carefully consider their compatibility with other tank inhabitants before introducing them.