The twostripe snake eel (Callechelys bilinearis) is an eel in the family Ophichthidae (worm and snake eels). It was described by Robert H. Kanazawa in 1952. It is a marine, tropical eel which is known from the western and southeastern Atlantic Ocean, including Bermuda, the West Indies, Lesser Antilles, St. Helena Island and Ascension Island. It dwells at a depth range of 0 to 22 metres (0 to 72 ft), most often at around 0 to 5 metres (0 to 16 ft). Males can reach a maximum total length of 172.4 centimetres (67.9 in).