Phasianella petiti Craven, 1882 (original combination) Tricolia petiti is a species of sea snail, a marine gastropod mollusk in the family Phasianellidae.

[2] The species was originally named Phasianella petiti by Craven in 1882.

It has a very narrow rim and is microscopically spirally striate.

Its color is corneous with irregular spots of reddish brown, except immediately below the sutures, where they are replaced by a band of alternate oblique white, cream and reddish flammules.

[4] This species occurs in the Atlantic Ocean off Gabon, Angola and the mouth of the Congo River.