Black Devil Snail (Faunus ater)

Category: Freshwater Snails
Scientific Name: Faunus ater
Origin: Southeast Asia and Indo Pacific regions
Lighting: Low to Moderate lighting suitable for natural grazing behavior
Substrate: Sand or fine gravel with rocks and driftwood for surface grazing
Size: Juvenile to Adult

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

What to Expect with Appearance

Black Devil Snails are known for their long, conical shell that tapers to a sharp point, giving them a bold and dramatic profile. Shell coloration is typically deep brown to nearly black, with subtle variation in tone depending on age and shell wear. The shell surface is smooth to lightly textured, and healthy specimens often show a natural sheen.

Juveniles may appear lighter in color, with shells darkening as they mature. Minor differences between older shell sections and new growth are normal and reflect natural development over time.

General Care Behavior and Tank Conditions

This species is a slow moving and deliberate grazer that spends much of its time feeding on biofilm, soft algae, and organic matter on hardscape and substrate surfaces. Black Devil Snails are peaceful and shrimp safe, making them suitable for calm community aquariums with stable conditions.

They do best in established tanks with consistent water quality and mature surfaces for grazing. While they contribute to general tank cleanliness, supplemental feeding is recommended when natural food sources are limited. Stable mineral levels support healthy shell growth and long term condition.

Bonus Tip

Providing plenty of hard surfaces such as rocks or driftwood encourages natural grazing behavior and helps keep Black Devil Snails active and visible.

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