Myrichthys colubrinus, the banded snake eel, ringed snake eel or harlequin snake eel, is a snake eel from the Indo-Pacific.

It occasionally makes its way into the aquarium trade.

It grows to a size of 97 cm (38 in) in length.

[2] The ringed snake eel resembles the venomous sea snake, Laticauda colubrina which is a form of Batesian mimicry.

[3] It also adjusts its behaviour to swim freely during the day, whereas other snake eels tend to stay hidden and roam at night.