Callechelys cliffi, the sandy ridgefin eel,Common names of Callechelys cliffi at www.fishbase.org. is an eel in the family Ophichthidae (worm/snake eels).Callechelys cliffi at www.fishbase.org. It was described by James Erwin Böhlke and John Carmon Briggs in 1954.Böhlke, J. E. and J. C. Briggs, 1954 (23 Aug.) [ref. 12335] Callechelys cliffi, a new ophichthid eel from the Gulf of California. Stanford Ichthyological Bulletin v. 4 (no. 4): 275-278. It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Mexico and Panama. It dwells at a depth range of , and inhabits sand sediments. Males can reach a maximum standard length of .
The species epithet "cliffi" refers to Frank S. Cliff. Due to there being an extremely limited number of known specimens, and thereby a lack of information on the species' distribution and population, threats and habitat requirements, the IUCN redlist currently lists the Sandy ridgefin eel as Data Deficient.Callechelys cliffi at the IUCN redlist.
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