The four-lined wrasse, Pseudocheilinus tetrataenia, is a species of wrasse native to the Pacific Ocean.

It inhabits coral reefs at depths from 6 to 44 m (20 to 144 ft).

This species can grow to 7.5 cm (3.0 in) in total length.

It can be found in the aquarium trade.

This Labridae article is a stub.