Common name: Nassa Snails

Nassa Snails, belonging to the genus Phrontis, are small, hardy marine gastropods that are highly valued in the reefkeeping hobby for their exceptional scavenging abilities. These snails are often used as part of a clean-up crew in saltwater aquariums due to their natural behavior of sifting through sand and consuming detritus, uneaten food, and decaying organic matter. Their activity helps maintain a clean substrate and reduces the accumulation of waste, which can contribute to poor water quality if left unchecked.

One of the most fascinating aspects of Nassa Snails is their burrowing behavior. They spend much of their time buried in the sand, only emerging when they detect food in the water column. This makes them an excellent choice for aquarists looking to aerate their substrate naturally. Their small size, typically ranging from 1 to 2 centimeters, allows them to navigate tight spaces and work efficiently in nano tanks as well as larger reef systems.

Nassa Snails are peaceful and compatible with most tank inhabitants, including fish, corals, and other invertebrates. However, they should not be housed with predatory species that may view them as a food source. These snails thrive in a well-established aquarium with a sandy substrate and stable water parameters. They are generally hardy and adaptable, making them suitable for both beginner and experienced aquarists.

Scientifically, Phrontis species are part of the Nassariidae family, which is known for its ecological role in nutrient cycling in marine environments. Their keen sense of smell, used to locate food, is a remarkable adaptation that highlights their evolutionary success. While they are primarily scavengers, they do not consume algae, so they should be paired with other clean-up crew members like hermit crabs or algae-eating snails for a balanced ecosystem.