Ramshorn Snail: Care, Breeding Control and Eggs
Published: 2026-10-27 · FishyKart Blog
Ramshorn snails are freshwater snails of the family Planorbidae, named for their flat, coiled shell, and the colourful red and pink forms in aquariums are usually Planorbella duryi. They stay small, about 1 inch (2.5 cm), eat algae and detritus, and are hermaphrodites: any two can breed, which is why ramshorns either stay a handful or become hundreds depending on how much you feed.
Photo: Dat doris - Wikimedia Commons, CC BY-SA 4.0
| Parameter | Value |
| Common aquarium species | Planorbella duryi (red, pink, blue colour forms) |
| Adult size | Up to about 1 in (2.5 cm) |
| Lifespan | About 1 year |
| Temperature | 70-78°F (21-26°C) |
| pH | 7.0-8.0 |
| Reproduction | Hermaphrodite, jelly egg clutches under water |
| Diet | Algae, biofilm, leftovers, dead plant matter |
Pest or Clean-Up Crew?
Ramshorn snails eat soft algae, film and leftover food and rarely touch healthy plants, so a few of them help. They become a pest only when food is abundant: every extra flake turns into eggs. The population is a gauge of how much you feed.
Keeping Numbers Under Control
- Feed only what fish finish in about two minutes
- Vacuum the gravel to remove leftover food
- Lift out snails that gather on a blanched vegetable slice placed overnight
- Add assassin snails or a snail-eating fish such as a pea puffer (see dwarf pea puffer)
- Avoid chemical snail killers: most contain copper, which also kills shrimp
Ramshorn Eggs
Ramshorn eggs come in a clear jelly blob with tiny brownish dots, stuck to glass, leaves or decor under water, and hatch in one to three weeks. More on telling them apart from other species: aquarium snail eggs.
Shell Care
Like other snails, ramshorns need hard, alkaline water for shell growth. Pitted or thin shells point to soft or acidic water; a pH around 7.5 and some calcium (crushed coral or cuttlebone) fix it.
Snails and shrimp in our shrimps, lobsters & snails collection