| Page last updatedWed 1 October 2025
 | The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win! 
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 Bivalvia | ... | Hyrioidea | Hyriidae | Hyriinae | Castaliini | Castalia ambigua Specimen INHS_17838: ImagesCastalia ambigua Lamarck, 1819, Rio Matos (Rio Amazon - Rio Apere Dr.), 6 km E Estación Biologica del Beni on rd. to San Ignacio, Beni, Bolivia
 
 
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