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Bruised Nassa (Phrontis vibex)

About Bruised Nassa

Nassarius snail — buries in the sand and emerges at feeding time like a periscope. Excellent at cleaning up leftover meaty food before it fouls. Reef-safe and one of the most useful cleanup crew members per dollar.

Phrontis vibex, common name the bruised nassa, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.

Notes from the editors

What it looks like. Small Nassarius snail with a pointed conical shell. Adult size ~1 inch.

In your tank. Excellent cleanup crew member. Burrows under the sand and emerges at feeding time like a periscope when it detects food in the water column. Will clean up leftover meaty food before it fouls the tank.

Care notes. Reef-safe and peaceful. Stock 1 per 5 gallons of sand bed.

Sourcing and feeding. Wild-collected from Atlantic waters; sold in bulk by reef cleanup-crew suppliers ($1–3 each). Scavenger — leftover meaty food, dying or dead inverts.

Care info is a starting point, not a guarantee. Individual specimens, water chemistry, and tankmate dynamics vary. Verify against multiple sources and adjust to what you observe. See our terms & disclaimers.

Related invertebrates

Sources & attribution