Tricolia rosea

Tricolia rosea, common name the rosy pheasant, is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Phasianellidae, the pheasant snails.

Description
The height of the shell varies between 2 mm and 5 mm. The minute shell is thin, shining and has an ovate shape. It has a uniform deep rosy color throughout. The four whorls are somewhat flattened at the upper part, then convex. The columella is white. The edge and the outer lip are stained with a line of dark rose.

Distribution
This marine species occurs off Western Australia, New South Wales and Tasmania.