Sphaeriids are tiny bivalves shaped a bit like miniature cockles. Their shells are often pale, but larger individuals may become brown as...
[Echyridella] (formerly [Hyridella]) is a genus of native freshwater mussels. The shells of large individuals are thick and darkly colour...
![[Echyridella]. Image: Stephen Moore](/assets/Tools-And-Resources/Identification/freshwater-invertebrates/echyridella_ebop_27_17111_awakaponga_11xmontage_b_650__FillMaxWzMwMCwyMDBd.jpg)