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.
Neothauma is a genus of freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the subfamily Bellamyinae of the family Viviparidae.
Viviparus acerosus is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Viviparidae, the river snails.
Fuxian Lake is a body of water in Yunnan Province, China. It stretches through Chengjiang, Jiangchuan and Huaning Counties, spanning an area of 212 square kilometers. It is the third-largest lake in Yunnan, after Dian Lake and Erhai Lake, and the deepest, at 155 meters. It is the third-deepest fresh water lake in China, after Tianchi and Kanas Lake.
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 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.
Margarya oxytropoides is a species of large operculate freshwater snail, an aquatic gastropod mollusc in the family Viviparidae, the river snails.
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.
