Home > Invertebrates > Shells > Nerites > Neripteron vespertinum

Updated 2/9/2026

Family Neritidae

HAWAII - FRESHWATER ENDEMIC

Neripteron vespertinum 



Windward O'ahu

Waikiki Aquarium

 
   

HAPAWAI

Locally common in the lower brackish section of unaltered streams on smooth rocks coated with green algae.  The olive green shell is translucent with a fragile lip, and the operculum has a peg.  Threatened with extinction due to water diversion and streambed alteration.  State law prohibits commercial sale of this edible delicacy.  Attains 1 inch, 25 mm.  Endemic to Hawaii.  Formerly known as Neritina vespertina and Theodoxus vespertinus.