The bridge duckbill eel (Nettenchelys gephyra) is an eel in the family Nettastomatidae (duckbill/witch eels). It was described by Peter Henry John Castle and David G. Smith in 1981.[1] It is a marine, deep water-dwelling eel which is known from the western Pacific Ocean, including New Caledonia, the Philippines, and Indonesia. It dwells at a depth range of . Females can reach a maximum total length of .
The species epithet "gephyra" means "bridge" in Ancient Greek, and refers to the link the species provides between the species Nettenchelys pygmaeus and Nettenchelys inion.