The most popular sand-sifting conch in the reef hobby — a hardy, fully reef-safe Atlantic species that plows the sand bed, eating detritus, leftover food and algae while aerating the substrate. Despite the dramatic name it isn't aggressive toward tankmates; the 'fighting' refers only to territorial shoving between rival males. It moves in a distinctive leaping 'hop' on a clawed foot and watches the tank with eyes on stalks.
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Educational only. KinStation content is reviewed by licensed veterinarians but cannot replace an in-person exam. Always consult a licensed veterinarian or board-certified specialist for diagnosis, treatment, or any decision affecting your pet's health.
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Shell up to about 11 cm (4.4 in) long; a medium, heavy-shelled conch.
Lifespan
3–5 years
Social needs
solo
Native region
Western Atlantic (North Carolina to Florida, Gulf of Mexico, eastern Mexico)
Origin
New World
Climate
⛅ Subtropical
Water type
🌊 Marine
Family
Strombidae
Genus
Strombus
Part of the Conchs
Large marine gastropods that plow and sift sand beds as living detritus and algae clean-up crew. Distinctive for their 'hopping' leaping foot, stalked eyes and heavy flared shells, most are peaceful sand-bed specialists — though a few relatives are predatory and not reef-safe.
How this animal changes through its life — each stage often has its own care, diet and space needs.
Photo coming soon
Larva
Most marine invertebrates hatch into microscopic planktonic larvae (such as the zoea of crustaceans or the bipinnaria/veliger of echinoderms and mollusks) that drift and feed in the water column. The larva looks nothing like the adult and undergoes major reorganization.
Photo coming soon
Juvenile
After settling out of the plankton, the juvenile takes on a recognizable miniature of the adult body plan — a tiny shell, a small star, or a translucent shrimp. Crustaceans grow by molting, shedding the exoskeleton to enlarge.
Photo coming soon
Adult
Adults reach full size and reproductive maturity with the species' mature shell, shape, or coloration. Many continue to molt or grow throughout life, and some show sex differences in size or claw/appendage shape.
Color & pattern variants
Natural variants occur in the wild; selectively bred (man-made) variants were developed in captivity.
Natural
Typical (mottled)
The standard form, with a heavy spired shell mottled in tan, orange-brown and cream and a glossy orange-tinted aperture. Color varies by individual and locality; not a bred strain.
Habitat & enclosure
Give one a mature reef or FOWLR tank of at least 20-30 gallons (75-115 L) built around an open, fine sand bed it can plow and burrow into — this is the single most important requirement. Keep stable tropical-to-subtropical reef parameters: temperature 72-80F (22-27C), pH 8.1-8.4, salinity SG 1.024-1.026, alkalinity 8-11 dKH, low nitrate and zero ammonia/nitrite.
It is native to the western Atlantic, from North Carolina through Florida and the Gulf of Mexico to eastern Mexico, on shallow sandy and seagrass bottoms. Any reef lighting and gentle-to-moderate flow suit it; the key is a real sand footprint, not a deep narrow tank.
Substrate
A fine sand bed of at least 1-2 inches (2.5-5 cm) is essential — it spends its life plowing, sifting and partly burrowing in sand, and a bare-bottom or coarse-gravel-only tank is unsuitable and will stress or starve it. Live sand is ideal, both as habitat and as a steady food source of detritus and microfauna.
Equipment & setup
Standard marine equipment is enough: live-rock or other biofiltration, a heater, a protein skimmer for nutrient export, and gentle-to-moderate flow. No special lighting is needed. The real 'equipment' is an adequate open sand-bed footprint per conch.
Diet
An omnivorous sand-bed grazer and detritivore that eats film and hair algae, diatoms, detritus, leftover food and decaying matter sifted from the sand. It has a strong appetite and commonly outpaces the food in a clean tank, so supplement with sinking pellets, dried seaweed (nori) and the occasional meaty morsel — many conchs slowly STARVE in tidy reefs that look 'too clean' to need cleanup crew. Stock to the sand area available, not the water volume.
Behavior & temperament
Peaceful and fully reef-safe toward fish, corals and other inverts — it ignores them and works the sand. The name is misleading: only rival males scuffle, harmlessly shoving with the foot, so either keep one per tank or give each male enough open sand to hold a territory in a larger system. It plows just under or across the surface, leaving feeding tracks, and rights itself with a quick flip of its sickle-shaped operculum-tipped foot. Watch it 'hop' rather than glide, eyes on stalks scanning the tank.
Health
Like all marine snails it is extremely sensitive to copper, so copper-based medications are off-limits, and to salinity and temperature swings, so drip-acclimate slowly. The two practical killers are starvation in over-clean tanks and being stranded upside-down — a conch flipped onto its back on bare glass or rock can struggle to right itself and may die, though on sand it usually self-rights. A sealed, non-moving conch for days is often failing; remove any dead snail promptly, as decaying tissue fouls water fast. (Educational only, not a substitute for advice from an aquatic veterinarian.)
Tips, DIY & hacks
Drip-acclimate over 1-2 hours and never expose it to air. Buy it for a tank with a genuine sand bed and some detritus to work, and feed sinking food or nori in lean systems so it doesn't starve. Keep one per small-to-medium tank to avoid male territorial shoving, and check periodically that it hasn't flipped onto bare glass.
Reviewed and signed off by: KinStation Editorial — pre-launch draft (pending DVM review) on 2026-06-09