Avenionia roberti is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk or micromollusk in the family Hydrobiidae.
A. roberti occurs in Germany, where it is considered critically endangered (vom Aussterben bedroht),[2] Belgium and the Netherlands.
[1][3] A. roberti inhabits groundwaters in karst areas.
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