Amnicola species are aquatic prosobranch gastropod mollusks belonging to the family Amnicolidae according to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005).

[2] Amnicola are a genus of tiny freshwater snails, typically less than half an inch (1.27 cm) long.

These shells typically exhibit a brownish color with subtle shading and feature up to 8 convex whorls.

The masked dusky snail relies on gills for respiration, making it dependent on dissolved oxygen in the water.

[4] Populations are typically found in still waters environments, but can also be commonly collected in slow-moving rivers, often on woody debris.