Great ramshorn snail
Planorbis corneus
Planorbis corneus has a discoid shell of 2-3 cm diameter, brown-red to black. The body is dark brown. It moves slowly on surfaces and in vegetation. It feeds on detritus, algae, and dead plants. It is hermaphroditic and reproduces easily in freshwater, laying gelatinous egg masses. It can become invasive if food is abundant. It is peaceful and compatible with most fish. It is sensitive to water quality.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 18–25 |
| pH | 7–8 |
| GH | 5–15 |
| KH | 3–10 |
| NO₃ | ≤ 40 |
| PO₄ | ≤ 2 |
Care
Care notes
Parameters: pH 7.0-8.0, temperature 18-25°C, GH 5-15, KH 3-10. Minimum tank size 20 liters. Tolerates a wide range but prefers hard water. Nitrates max 40 ppm, phosphates max 2 ppm. Diet: detritus, algae, wafers, vegetables. Can be kept in groups. Beware of overpopulation. Compatible with peaceful fish. Avoid snail-eating fish. Can be used in outdoor ponds. Easy reproduction, control food.