Browse the MUSSELp Database!
The Freshwater Mussels (Unionoida) of the World
(and other less consequential bivalves)

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The searching function is handled by a Google Custom Search Engine.

The May 2025 Mussel of the Month is Assamnaia involuta. Assamnaia (Unionidae) is a monotypic genus from north India and Bangladesh (East Asia).

Assamnaia is one of the new genera recently described in the Parreysiinae, a recent focus of freshwater mussel research.

The MUSSEL Project Database Dashboard

The MUSSELpdb-db is a quick summary of the current state of freshwater mussel species & genus richness, according to the MUSSEL Project Database (the MUSSELpdb).