The many-vertebrae snake eel (Echelus polyspondylus) is a species of ray-finned fish native to the Northwest Pacific.

[2] The species measures 331 to 561 mm (13.0 to 22.1 in).

It has many small cone-like teeth which marginally points backwards.

The very end of the tail is stretchable and the pectoral fin is sharp.

The dorsal area is yellowish-brown, the undersides are lightly colored, and the anal-fin which is black is covered around pale areas of either fin.