Callechelys marmorata, also known as the marbled snake eel, is a benthic marine fish belonging to the family Ophichthidae which refers to serpentine in shape fishes.

The Marbled snake eel is a medium-sized fish which grows up to 87 cm.

[1] It is widely distributed throughout the tropical waters of the Indian Ocean, Red Sea included, to the western Pacific Ocean.

[2] It inhabits the sandy and muddy bottoms close to coastal reefs, from 1 until 37 m in depth.

[3] The Marbled snake eel has a nocturnal activity.