Sphaerium solidum

Sphaerium solidum, the solid orb mussel, is a species of freshwater bivalve from family Sphaeriidae.

Distribution and conservation status

 * Listed in IUCN Red List – Assessed in 2012 as NT (near threatened)
 * Germany – critically endangered (vom Aussterben bedroht)
 * Poland – endangered (EN)
 * Slovakia