DLNR Aquarium

Locally common in fresh or brackish water streams near the ocean.  Large tapering head, thick lips, and a dark spot at the base of the tail.  A delicacy enjoyed by native Hawaiians.  Attains 12 inches.  Recent DNA analysis indicates the species is endemic to Hawai'i but is closely related to and long-confused with Awaous guamensis which is known from high islands of the Marianas, New Caledonia, and Fiji.

http://www5.pbrc.hawaii.edu/ccrt/taras/site/aguamensis.html

http://www.asihcopeiaonline.org/doi/abs/10.1643/CI-11-027