From ReefPedia

[edit] Margarita snail Scientific Name Margarites pupillus Max. Size: 1/2" Tank Size: Any, but need sufficient algal production for population size. Aggression: None Hardiness: Moderate (temperature problems in reef tanks, see below) Reef-Safe: Yes Available as captive-bred: No Hitchhiker? No

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Physical Description

Generally have a dull purple shell with a pearly surface towards the top. Black wrinkled body with a white/tan foot underneath.

Distribution

Cooler waters, Atlantic and Pacific

Taxonomic Stuff you know you Care About

• Genus: Margarites

• Species: pupillus

Behavior

Efficient and nearly non-stop cleaners of glass and live rock.

Feeding

They have no special needs outside of the sufficient production of algae and detritus on rocks and glass. Too many in too small of a tank can lead to starvation issues as they tend to eat a lot and quickly deplete food supply.

Breeding

Not in captivity.

Social Structure

None

Additional Notes

Margarita Snails tend to come from cooler water climates than most reef tanks (which tend to be 76 and up). As a result, their metabolisms in a reef tank will be sped up, drastically shortening their lifespan and often leading to an early death. Unfortunately, due to their abundance and reputation as extremely efficient grazers, they continue to be popular items in fish stores. Other tropical species would be much better suited for reef water temperatures.