What Tank Setup for Shrimp and Nerite Snails Living Together?
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
A planted, fully cycled 20 to 40-litre tank is enough to house dwarf shrimp and nerite snails together: the two do not compete, do not prey on each other, and naturally split the cleanup work. The real challenge is not the cohabitation itself, but the stable water parameters shrimp demand and choosing a tank with no predatory fish. A 2022 study on freshwater snail communities found that their grazing of epiphytic algae and phytoplankton directly benefits the growth of aquatic plants, a mechanism that carries over neatly to a planted shrimp tank. Find our other pointers in the bedding and habitat section, and all our guides on the fishkeeping hub.
Contents · 5 sections
Why pair shrimp with nerite snails?
Dwarf shrimp (Neocaridina, Caridina) forage through the substrate and decor for detritus and biofilm, while nerite snails scrape algae off glass, leaves and rocks. Neither species bothers the other, and crucially, nerites cannot reproduce in freshwater: unlike some other snails, they will not overrun the tank.
What volume and water parameters should you aim for?
A 20 to 40-litre nano tank suits a small colony, provided it is fully cycled before residents go in: see our guide shrimp water parameters for beginners. Aim for a GH between 6 and 10, a neutral to slightly alkaline pH, and stable water rather than "perfect" numbers: sudden swings are more dangerous to shrimp than a value slightly off the ideal. The starting budget for this kind of tank is modest, see our guide budget for a shrimp tank.
How should you set up the tank for both?
Provide java moss, driftwood and low hiding spots for shrimp during molting, when they are vulnerable for a few hours after shedding their shell. Nerites prefer hard surfaces (glass, rock, wood) where algae grows. An inert or lightly nutrient-rich substrate suits both, as long as it contains no copper.
What risks should you avoid?
Copper, found in some algae and parasite treatments, is lethal to shrimp and snails alike: always check the ingredients before treating the tank. Also avoid any fish, however peaceful its reputation, capable of swallowing an adult dwarf shrimp or a young nerite. Finally, remove empty shells from dead snails promptly so they do not pollute the water.
Frequently asked questions
Do nerite snails eat shrimp?
No, nerites feed exclusively on algae and biofilm. They pose no danger to shrimp at any age.
Do you need a strong filter in this kind of tank?
No, a gentle, low-flow filter is enough and avoids sucking up baby shrimp. A sponge filter is often the safest choice.
Do nerite snails breed in the aquarium?
They lay white egg capsules on decor, but these do not hatch in freshwater: the population cannot explode the way it can with some other snail species.
In our shop, for this use: Ceramic pebble hide for shrimp and small fish (€20.90) · the whole shop
This guide is part of Planète Pets’s Fishkeeping universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.