What is "coloconger"

The Colocongridae, the worm eels or short-tail eels are a family of eels, containing a single genus, Coloconger.

Colongrids are found in tropical waters of the Atlantic, Indian, and West Pacific oceans. They are bottom-dwelling fish, living in waters from in depth. Compared with other eels, they have relatively short and stubby bodies, with blunt snouts.