Sphaerium corneum, also known as the European fingernailclam, is a very small freshwater clam, an aquatic bivalve mollusk in the family Sphaeriidae, the fingernail clams.
Bithyniidae is a family of small freshwater snails with an operculum, aquatic gastropod molluscs in the clade Littorinimorpha.
Pisidium is a genus of very small or minute freshwater clams known as pill clams or pea clams, aquatic bivalve molluscs in the family Sphaeriidae, the pea clams and fingernail clams.
Anceya is a genus of tropical freshwater snails with an operculum, aquatic gastropod mollusks in the family Paludomidae.
Bridouxia rotundata is a species of tropical freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Paludomidae.
Ferrissia is a genus of small, air-breathing freshwater limpets, aquatic gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies.
Melanoides admirabilis is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Thiaridae.
Melanoides pergracilis is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Thiaridae.
Stormsia minima is a species of freshwater snail, an aquatic gastropod mollusk in the family Paludomidae.
Theodoxus is a genus of nerites, small water snails with an operculum, some of which live in freshwater, and some in both freshwater and brackish water, aquatic gastropod mollusks in the family Neritidae, the nerites.
Anisus is a genus of small air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the subfamily Planorbinae of the family Planorbidae, the ramshorn snails and their allies.
Bellamya is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Viviparidae.
Lentorbis is a genus of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.
Pisidium stewarti is a species of minute freshwater clam. It is an aquatic bivalve mollusc in the family Sphaeriidae, the fingernail clams and pea clams.
