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Nassarius Snail

Nassarius sp.

Also known as Nassarius Whelk, Nass Snail, Detritius Snail

AnimaliaMolluscaGastropodaNeogastropodaNassariidae

📍 Worldwide tropical & subtropical oceans

Small sand-dwelling scavenger that buries itself and erupts from the substrate to feed on meaty detritus. Excellent sand bed aerator and clean-up crew staple.

Size1.5"
Min Tank10g
peaceful
Zonebottom

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Tanks keeping this 🐟

Kept by 1 hobbyist

Community tanks featuring Nassarius Snail.

Care Guide

Diet

Nassarius snails are detritivores that feed primarily on decaying organic matter, uneaten food, and dead organisms in the sand bed. Feed them meaty foods like frozen bloodworms, mysis shrimp, or small pieces of raw fish 2-3 times weekly, though they will scavenge continuously. They rarely need supplemental feeding if the tank has adequate bioload and detritus.

Behavior

These snails are mostly nocturnal and spend daylight hours buried in the substrate, emerging at night or when food is detected to feed. They are excellent sand bed aerators, constantly burrowing and turning over substrate while searching for food. They are peaceful and solitary, showing no aggression toward tank mates.

Breeding

Breeding Nassarius snails in captivity is extremely rare and difficult, as they require specific environmental triggers and larval development stages that are hard to replicate in home aquariums. Sexual reproduction occurs, but most captive populations do not breed successfully. Hobbyists typically rely on wild-caught specimens or aquaculture sources.

Common Diseases

Shell Erosion

Symptoms

Pitting, chalky appearance, or thinning of shell; reduced activity

Treatment

Improve water quality and calcium levels; ensure proper pH (8.1-8.4); perform regular water changes; add calcium supplements if needed

Parasitic Infection

Symptoms

Lethargy, failure to emerge from shell, visible parasites on body or shell

Treatment

Quarantine affected snails; perform dips in freshwater or medicated baths; improve tank sanitation and water quality

Bacterial Infection

Symptoms

Foul odor from shell, tissue decay, cloudy appearance around foot

Treatment

Increase water changes and aeration; maintain stable salinity and temperature; remove dead tissue if possible; consider antibiotic treatment in severe cases

Starvation

Symptoms

Prolonged inactivity, failure to emerge, visible weight loss

Treatment

Increase feeding frequency with meaty foods; ensure adequate bioload in tank; supplement with frozen bloodworms or mysis shrimp

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Quick Facts

pH
8.1–8.4
diet
detritivore/scavenger
salinity
1.023–1.025 SG
minTankSize
10 gallons
temperature
72–79°F (22–26°C)

Water it likes

ph
8.1–8.4
ammonia
0 ppm
nitrate
<20 ppm
hardness
8–12 dGH
temperature
72–81°F (22–27°C)

Legality

No state or federal restrictions on record for this species.

Not legal advice, and possibly incomplete or out of date. Rules vary by state and locality and change over time — always confirm the current regulations with your state wildlife or agriculture agency before buying, keeping, or shipping this species.

Temperature

72–79°F

22–26°C

Stats

Community tips0
Kept by1 hobbyists