Harvestfish have a compressed round body that rapidly tapers down to a forked tail. The harvestfish has a blunt snout and a small, forward-oriented mouth. The upper back and sides of the fish may appear silver-blue/green, which fades to silver/white near the belly. The harvestfish has falcate dorsal and anal fins with the anterior ray of both fins elongate. The fish does not have any pelvic fins, and the lateral line is located higher up on the upper half of the body. Harvestfish typically reach up to 7 inches in length, but larger specimens have been observed to reach up to 14 inches.