Fighting Conch

Strombus alatus

Origin	Caribbean Sea, Gulf of Mexico, Western Atlantic
Maximum Length	4–5 inches
Minimum Tank Size	30 gallons
Reef Compatibility	Yes — excellent reef tank cleanup crew member

Behavior

The Fighting Conch is one of the most effective sand-bed maintenance animals available for reef aquariums. It plows continuously through the substrate consuming microalgae, diatoms, cyanobacteria, detritus, and uneaten food — keeping the sand bed clean, aerated, and healthy. Despite its aggressive-sounding name, the Fighting Conch is peaceful toward other tank inhabitants; the name refers to its habit of using its sharp operculum (trapdoor) as a defensive weapon against predators. It is active and interesting to observe as it moves across the sand using a muscular foot.

Diet & Feeding

Herbivore/detritivore. Grazes on microalgae, diatoms, cyanobacteria, and organic detritus in the sand bed. Will also accept dried seaweed (nori) placed on the sand.

Cautions

Requires a fine sand substrate at least 2 inches deep to move and feed properly — will starve on bare-bottom tanks. Cannot right itself if flipped onto its back; check periodically and right it manually. Keep away from large triggerfishes and puffers that will crack its shell. Needs algae or detritus to eat — may starve in very clean, new aquariums.