Callechelys eristigma

Callechelys eristigma, the spotted ridgefin eel, is an eel in the family Ophichthidae (worm/snake eels). It was described by John E. McCosker and Richard Heinrich Rosenblatt in 1972. It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Costa Rica, Mexico, and Panama. It dwells at a depth range of 5 to 25 m, and inhabits benthic sediments of rock and sand. Males can reach a maximum standard length of 113 cm.

The IUCN redlist currently lists the spotted ridgefin eel as Least Concern, in spite of its limited distribution, due to a lack of known threats or observed population decline.