Peprilus simillimus is a ray-finned fish in the family Stromateidae (butterfishes) of the order Scombriformes. The fish can reach a length of 28 centimeters.
Peprilus simillimus is a saltwater fish. It prefers a subtropical climate and lives mainly in the Pacific Ocean. The depth spread is 9 to 91 meters below the surface of the water.
Peprilus simillimus is of considerable commercial importance for fishing. In angling, little is hunted for the fish.