Fusinus colus, common name the Distaff spindle or Long-tailed Spindle, is a species of sea snail, a marine gastropod mollusk in the family Fasciolariidae, the spindle snails, the tulip snails and their allies.

[1] This species is present in the Indian Ocean and in the western and central Pacific Ocean, from East Africa to Melanesia, southern Japan, and southern Queensland.

[2][3][4] These sea snails are common in coastal waters at depths of 5 to 40 m. They inhabit littoral and the tidal zone and prefer sandy bottoms.

[2] These shells are thick, long, biconic, spindle-shaped, with many spiral ribs, grooves and nodules.

The outer surface is usually whitish, but may be yellowish, brown or reddish in color.