The giant leptocephalus (Coloconger giganteus) is a species of eel in the family Notacanthidae (spiny eels).

[1] It was first described by Peter Henry John Castle in 1959.

[2][a] It is a marine, deep-water dwelling eel which is distributed worldwide.

[3] In 2014 it was confirmed as a species of Coloconger.

This Anguilliformes article is a stub.