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Home > Invertebrates
> Shells > Nerites
> Theodoxus cariosus
updated 11/26/2013
Family Neritidae
HAWAII -
FRESHWATER
Theodoxus cariosus
PIPIWAI
Uncommon in the lower, often brackish, section of unaltered streams attached to boulders. Threatened with extinction due to diversion of
stream waters and construction of concrete stream banks. Shell
inflated, black with white flecks and white underside. Attains 1
inch. Endemic to Hawaii. Formerly known as Neritina
cariosa. |
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