Theodoxus fluviatilis

Classification

Animalia [kingdom]
Mollusca [phylum]
Gastropoda [class]
Prosobranchia [subclass]
Archaeogastropoda [superorder]
Vetigastropoda [order]
Scissurelloidea [superfamily]
Neritidae [family]
Theodoxus [genus]
Theodoxus fluviatilis [species]