How to Keep Horned Nerite Snail at Home
A tiny gold-and-black horned Nerite (Clithon) that is arguably the best algae-eating snail - and cannot breed in freshwater, so it never overruns a tank. The clean-up snail that stays a clean-up snail.
The horned nerite (a small Clithon with tiny black spines on a gold shell) is many aquarists' favourite algae eater, and its greatest feature is a limitation: it cannot reproduce in freshwater. That means it grazes algae off glass, rock and plants relentlessly, yet never explodes into a pest population the way pond or bladder snails do. It's the clean-up snail you can add without fear - it does its job and never takes over.
Why raise horned nerite snails
For maximum algae control with zero pest risk.
- Among the best algae eaters in the hobby - glass, rock, plants, even tough spot algae.
- Cannot breed in freshwater, so it never overpopulates.
- Plant-safe and peaceful, tiny and unobtrusive.
The tank and setup
- Any mature tank with algae to graze - planted or not.
- A secure lid. Nerites are champion climbers and will leave a tank looking for more algae.
- Enough grazing surface - a spotless brand-new tank starves them.
Water and stability
Warm, stable, cycled water; copper is lethal to snails. They want enough calcium/hardness to keep the shell sound - add cuttlebone or a mineral in soft water, or the shells pit and erode.
Feeding and daily care
Ideally self-feeding on algae; when algae runs low, offer algae wafers and blanched vegetable so they don't slowly starve in an over-clean tank. Watch for a snail that stops moving or clamps shut - usually hunger or a water-quality issue.
Breeding and raising the young
You won't get a colony, and that's the point. Females lay small hard white egg capsules on hardscape (cosmetic, sometimes annoying on glass), but the larvae need brackish/marine water to develop, so no baby snails appear in freshwater. Enjoy the guaranteed-no-population-boom clean-up.
Common mistakes
- No lid - escaped, dried-out nerites are the classic loss.
- A too-clean tank with no supplemental food.
- Copper, and soft water with no calcium.
- Expecting babies - there won't be any in freshwater.
Is horned nerite snail right for you
Close to the ideal algae-control snail for almost any freshwater tank - powerful grazer, plant-safe, and incapable of becoming a pest. The only downsides are the cosmetic eggs and their talent for climbing out, both easily managed.
🎣 Kit for a home aquarium
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