Onion Nerite Snails | 3 Pack
The onion nerite snail, also called the red onion nerite snail, has a round shell with brown and cream bands with black spots that could resemble onion rings. These nerite snails love to graze on algae in both freshwater and slightly salty tanks. They stay fairly small and won’t reproduce in a regular aquarium. Onion snails are steady cleaners and with unique shell pattern that make them a popular pick for planted and nano aquarium setups.
Background and Key Benefits
Nerite snails or Neritina sp. are freshwater snails related to the mollusk family. They will clean algae from glass, substrate, and décor. They are also so popular in our hobby because they do not reproduce in freshwater. In the wild, they are found in brackish and marine environments, but in captivity, they thrive in freshwater tanks with stable conditions.
| Feature | Detail |
|---|---|
| Quantity | 3 snails |
| Species | Neritina sp. (Onion Nerite Snail) |
| Size | Approx. 1.5 cm (0.6 inch) |
| Environment | Freshwater and slightly salty tanks |
| Reproduction | Do not reproduce in freshwater |
FAQ
Do onion nerite snails reproduce in freshwater?
No, onion nerite snails do not reproduce in freshwater tanks.
What kind of environment do these snails prefer?
They thrive in freshwater and slightly salty tanks, and are well-suited for planted or nano aquariums.
How do onion nerite snails help in an aquarium?
They graze on algae found on glass, substrate, and decorations, helping to keep the tank clean and tidy.

Jan Ross –
I bought three onion nerite snails for my 10-gallon planted tank. They’ve been active since day one and are constantly eating algae without causing any issues. Their shell patterns are unique and add a nice visual touch. No reproduction has happened, which is a relief. Easy to care for and very effective at cleaning.
Christopher Bailey –
The snails arrived quickly and looked healthy. They’ve been in my nano tank for two weeks and are already cleaning the back glass and plant leaves. I didn’t expect them to be so active. No signs of breeding, which is great for a low-maintenance setup.
Brian Ellison –
Perfect for a beginner aquarist. The snails are small, don’t breed, and keep the algae under control. I love the way their shells look—like real onion rings. They’ve been in my tank for three weeks and still active.