Little Whirlpool Ramshorn Snail
Anisus vorticulus
📍 Europe
The Little Whirlpool Ramshorn Snail is a tiny, peaceful freshwater snail with a distinctive flattened spiral shell, typically reddish-brown in color. These snails are excellent algae grazers and detritivores, making them valuable cleanup crew members in planted and community tanks. They are hardy, easy to care for, and breed readily in freshwater, which can lead to population booms if not managed.
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Tanks keeping this 🐟
Kept by 2 hobbyistsCommunity tanks featuring Little Whirlpool Ramshorn Snail.
Care Guide
Diet
Little Whirlpool Ramshorn Snails are primarily herbivorous grazers that feed on algae, biofilm, and decaying plant matter. Supplement with blanched vegetables (zucchini, spinach) and quality algae wafers. Provide adequate calcium through cuttlebone, calcium supplements, or mineral-rich substrates to maintain shell health.
Behavior
These tiny snails are slow-moving bottom dwellers that spend most of their time grazing on surfaces and in the substrate. They are nocturnal and most active during low-light periods. They do not burrow but will hide among plants and decorations when stressed or during the day.
Breeding
Little Whirlpool Ramshorn Snails are simultaneous hermaphrodites that lay small clutches of eggs above the waterline on hard surfaces. They breed prolifically in freshwater without any special conditions, and populations can quickly become overwhelming in established tanks. Manual removal of egg clutches or regular culling is necessary to prevent overpopulation.
Tank Mates
Compatible snail species; similar care requirements and peaceful nature
Peaceful invertebrate; shares algae-grazing role without competition or aggression
Small, peaceful fish that will not predate on snails; compatible water parameters
Peaceful community fish; generally ignore small snails
Peaceful algae-eating fish; shares similar ecological niche without conflict
Peaceful bottom-dweller; will not predate on snails and shares detritivore role
Common Diseases
Shell Erosion / Soft Shell
Shell becomes thin, pitted, or translucent; slow growth; visible shell damage
Increase water hardness (GH) to 8+ dGH; add cuttlebone, crushed coral, or calcium supplements; ensure pH is above 6.5; perform regular water changes with mineral-rich water
Copper Toxicity
Lethargy, retraction into shell, inability to move, death
Immediately remove snail from copper-containing environment; perform large water changes; never use copper-based medications or algaecides in tanks with snails; use copper-free plant fertilizers
Parasitic Infections (Flukes/Trematodes)
Excessive mucus production, shell damage, lethargy, erratic behavior
Quarantine affected snail; perform frequent water changes; maintain excellent water quality; use copper-free parasite treatments if available; consider salt baths (1 teaspoon per gallon) for 10-15 minutes as emergency measure
Calcium Deficiency
Weak or crumbling shell, stunted growth, pale coloration
Add calcium supplements or cuttlebone to tank; increase water hardness; provide mineral-rich foods; ensure adequate pH (6.5+) for calcium absorption
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Quick Facts
- diet
- Herbivore/detritivore; grazes on algae, biofilm, decaying plant matter, and soft algae wafers
- lifespan
- 1-2 years
- max size
- 0.8 cm (0.35 in)
- tank size
- 5 gallons minimum
- temperament
- peaceful
Water it likes
- ph
- 6.5-8.0
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 6-18 dGH
- temperature
- 64–82°F (18–28°C)