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Freshwater snails care guide

Nerite Snail

Neritidae spp.

Excellent algae grazer; eggs do not hatch in normal freshwater.

Starter tank5+ gal
Temperature72–78°F
pH7–8.4
Group guideSpecies-specific

Planning your aquarium

The library starting point is 5+ US gallons. Check adult size, grazing surface, oxygenation, and food supply.

Stable water and adequate dissolved minerals help protect shell growth. Do not assume that every snail eats the same foods or that an aquarium has enough natural algae.

Behavior and tankmates

Excellent algae grazer; eggs do not hatch in normal freshwater.

Provide mature grazing surfaces, stable minerals and an escape-resistant lid.

Check tankmates for snail-eating behavior, and keep medication ingredients in mind. Some snails reproduce readily, while others require specialized breeding conditions.

Food and feeding

Food options: Algae wafers, Natural algae, Blanched vegetables.

Check for adequate natural algae and supplement when grazing surfaces become bare.

Offer supplemental foods when the tank does not provide enough natural grazing. Remove uneaten food before it fouls the water.

Additional care caution

Egg capsules may be laid in freshwater, but most aquarium nerites do not complete reproduction there.

Tankmate cautions in the checker

  • Use caution with Assassin Snail: Assassin snails are predatory and may attack other snails, especially smaller or weakened individuals.

These are selected rule-based cautions, not a complete compatibility assessment.