The smallfish snake eel (Quassiremus nothochir, also known as the redsaddled snake eel in Mexico[1]) is an eel in the family Ophichthidae (worm/snake eels).[2] It was described by Charles Henry Gilbert in 1890.[3] It is a marine, tropical eel which is known from the eastern central Pacific Ocean, including Mexico, Nicaragua, Panama, the Gulf of California and Costa Rica.[4] It dwells in shallow waters at a maximum depth of 20m (70feet), and inhabits sand and rock sediments. Males can reach a maximum total length of 70cm (30inches).[2]
Due to its wide distribution in its region, its lack of known threats and lack of observed population decline, the IUCN redlist currently lists the Smallfish snake-eel as Least Concern.[4]