Japanese Trapdoor Snail (Cipangopaludina japonica)

Category: Freshwater Snails
Scientific Name: Cipangopaludina japonica
Origin: East Asia
Lighting: Low to Moderate lighting suitable for natural grazing behavior
Substrate: Sand or fine gravel with smooth surfaces for movement
Size: Juvenile to Adult

Parameters (Freshwater Snail Standard):
GH: 6–12
KH: 2–8
pH: 6.8–8.0

What to Expect with Appearance

Japanese Trapdoor Snails have a rounded, sturdy shell with clearly defined spiral growth lines. Shell coloration commonly ranges from tan to olive brown, with natural variation between individuals. New shell growth may appear lighter or smoother before gradually blending with older sections as the snail matures.

Appearance can change subtly over time depending on diet and mineral availability. A healthy snail will show steady shell growth and a consistent surface texture, while minor differences between older and newer shell areas are normal.

General Care Behavior and Tank Conditions

This species is a slow moving and peaceful grazer that spends much of its time feeding on biofilm, soft algae, and organic matter on glass, hardscape, and substrate. Japanese Trapdoor Snails are shrimp safe and well suited for community aquariums with stable conditions.

They perform best in established tanks with consistent water quality and regular maintenance. While helpful as part of a cleanup crew, they benefit from supplemental feeding when natural algae is limited. Stable mineral content supports strong shell development and long term health.

Bonus Tip

Maintaining steady water parameters and offering occasional calcium rich foods can help ensure smooth shell growth and prevent erosion over time.

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