[4] It is a marine, tropical eel which is known from the eastern central and southeastern Pacific Ocean, including Costa Rica, Colombia, Panama and Ecuador.

[5] It dwells in shallow waters at a maximum depth of 10 metres (33 ft), and inhabits sand and mud sediments and mangroves.

Males can reach a maximum total length of 68 centimetres (27 in).

[3] The IUCN redlist currently lists the Marble-toothed snake eel as Near Threatened, due to the decline in mangroves in its range of habitat.

The population of the Marble-toothed snake eel is estimated to have declined by 25% over a course of 10–15 years.