The Convict snake eel (Leiuranus versicolor) is an eel in the family Ophichthidae (worm/snake eels). It was described by John Richardson in 1848. It is a tropical, marine eel which is known from the Pacific Ocean, including Palau, Australia, Papua New Guinea, and Norfolk Island. It dwells at a depth range of , and forms burrows in the soft bottoms of inshore regions. Males can reach a maximum total length of .