''Unio ravoisieri'' is a species of

bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...

belonging to the family Unionidae. It is endemic to North Africa, including at least Algeria and Tunisia. It occurs in rivers and is often found in shallow rivers on gravel and silt bottoms.. ''Unio ravoisieri'' grows to a shell length of at least .

References

Unionidae Molluscs of Africa Freshwater animals of Africa Bivalves described in 1848 {{Unionidae-stub