Nettenchelys dionisi is an eel in the family Nettastomatidae (duckbill/witch eels). It was described by Alberto Brito in 1989.[1] It is a marine, deep water-dwelling eel which is known from the Canary Islands, in the eastern central Atlantic Ocean. It dwells at a depth range of 350mto400mm (1,150feetto1,300feetm), and leads a benthic lifestyle. Males can reach a maximum total length of 62cm (24inches).
The species epithet, "dionisi" refers to Gustavo Perez-Dionis, and was given as a tribute for his contributions to the study of marine life in the Canary Islands.