Unio is a genus of medium-sized freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels. They are found throughout Europe...

Unio may refer to: Unio (bivalve), a genus of freshwater mussels Unio (sternwheeler), a steamboat that operated in Oregon, United States, in 1861, before...

Unio mancus is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. Subspecies Unio mancus mancus Lamarck...

Unio pictorum, the painter's mussel, is a species of medium-sized freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels...

Unio crassus, the thick shelled river mussel, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels...

Unio gibbus is a species of bivalve belonging to the family Unionidae. The species is found in the Iberian Peninsula and Morocco. "Unio gibbus". Global...

Unio turtoni is a species of medium-sized freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. The species is endemic...

Unio ravoisieri is a species of bivalve belonging to the family Unionidae. It is endemic to North Africa, including at least Algeria and Tunisia. It occurs...

Unio tumidus, the swollen river mussel, is a species of freshwater mussel, an aquatic bivalve mollusc in the family Unionidae, the river mussels. Subspecies...

Unio tumidiformis is a species of bivalve belonging to the family Unionidae. It is endemic to the southwestern Iberian Peninsula. Existing populations...