Viviparus contectus

Viviparus contectus, common name Lister's river snail, is a species of large, freshwater snail with an operculum and a gill, an aquatic gastropod mollusk in the family Viviparidae, the river snails.

Viviparus contectus
Shell of Viviparus contectus
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Architaenioglossa
Family:	Viviparidae
Genus:	Viviparus
Species:	V. contectus
Binomial name
Viviparus contectus (Millet, 1813)[2]
Synonyms
Contectiana contecta (Millet, 1813) Cyclostoma contectum (Millet, 1813) Cyclostoma viviparum Draparnaud, 1801 Helix vivipara Linnaeus, 1758 Nerita vivipara O. F. Müller, 1774 Paludina contecta Moquin-Tandon, 1855 Paludina contecta Millet, 1813 Paludina fasciata (Stein, 1850) Paludina listeri Forbes et Hanley, 1853 Paludina vivipara Lamarck, 1835

Distribution

This is not a native of the UK. This species is palaearctic in distribution, specifically Europe and western Siberia, including:^[3]

• Great Britain, specifically eastern England
• Netherlands^[4]
• Germany - endangered (3 gefährdet)^[5]
• Austria
• Czech Republic - near threatened (NT)^[6][7][8]
• Slovakia^[8]
• Russia - Sverdlovsk oblast^[9]

Habitat

This large snail lives in slow flowing rivers and canals which are unpolluted, and which have hard water with many water weeds.^[10]