Coloconger japonicus is a species of eels in the family Colocongridae (worm eels/short-tail eels).

[2] It is a marine, deep-water dwelling eel which is known from the East China Sea.

It dwells at a depth range of 750–760 metres.

Males can reach a maximum total length of 56 centimetres.

This Anguilliformes article is a stub.