Viviparus viviparus
Animal
Viviparus viviparus is a species of large freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae, the river snails. This species is a viviparous snail. Wikipedia
Scientific name: Viviparus viviparus
Conservation status: Least Concern (Population decreasing)
Class: Gastropoda
Subclass: Caenogastropoda
Family: Viviparidae
Order: Architaenioglossa
Phylum: Mollusca