Viviparidae, sometimes known as the river snails or mystery snails, are a family of large aquatic gastropod mollusks, being some of the most widely distributed operculate freshwater snails.
The Chinese mystery snail, black snail, or trapdoor snail, is a large freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Viviparidae. The Japanese variety of this species is black and usually a dark green, moss-like alga covers the shell.
Cipangopaludina is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Viviparidae.
Freshwater snails are gastropod mollusks that live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers. The great majority of freshwater gastropods have a shell, with very few exceptions. Some groups of snails that live in freshwater respire using gills, whereas other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung. Most feed on algae, but many are detritivores and some are filter feeders.
Bellamya is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Viviparidae.
Margarya monodi is a species of large operculate freshwater snail, an aquatic gastropod mollusc in the family Viviparidae, the river snails.
Margarya is a genus of large operculate freshwater snails, aquatic gastropod molluscs in the family Viviparidae.
Margarya mansuyi is a species of large operculate freshwater snail, an aquatic gastropod mollusk in the family Viviparidae, the river snails.
Margarya bicostata is a species of large operculate freshwater snail, an aquatic gastropod mollusk in the family Viviparidae, the river snails.
Tchangmargarya yangtsunghaiensis is a species of large operculate freshwater snail, an aquatic gastropod mollusc in the family Viviparidae, the river snails.
Margarya melanioides is a species of large operculate freshwater snail, an aquatic gastropod mollusc in the family Viviparidae, the river snails.
Tchangmargarya is a genus of large operculate freshwater snails, aquatic gastropod molluscs in the family Viviparidae.
Anularya is a genus of large operculate freshwater snails, aquatic gastropod molluscs in the family Viviparidae.
Tchangmargarya multilabiata is a species of large operculate freshwater snail, an aquatic gastropod mollusc in the family Viviparidae, the river snails.
Margarya francheti is a species of large operculate freshwater snail, an aquatic gastropod mollusc in the family Viviparidae, the river snails.
Sinotaia quadrata is a species of a freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae. It is widely distributed and common species in China and in northern Vietnam inhabiting various shallow freshwater habitats, where it can reach high densities. It is a keystone species in its habitat and can significantly affect water quality and phytoplankton communities. It is commonly used in Chinese cuisine.
Cipangopaludina cathayensis is a species of large, freshwater snail with an operculum and a gill, an aquatic gastropod mollusk in the family Viviparidae, the river snails.
Angulyagra polyzonata is a species of a freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae.
Cipangopaludina miyagii is a species of large, freshwater snail with an operculum and a gill, an aquatic gastropod mollusk in the family Viviparidae, the river snails. This freshwater snail found only in Southern part of Taiwan.
