1, shape: the real sesame swordfish body is slender and not round and fat, the face has a protrusion, presenting a sword-like shape, which is an important feature to distinguish the sesame swordfish from the fish. If the shape of the fish does not match this, it may be forged or counterfeit.

2, spots: the sesame swordfish spots for "block", and dense, while the fork tail spots for "points", less.

3, color: sesame sword yellow-green, fins red. Fork-tail gray, fins red.

4. Body: Sesame sword is long and thin, with a water snake waist and a small tail fin. Forked tail short, thick, bucket waist, large open caudal fin.

5. Meat: Sesame sword meat is tender and delicious. Fork tail meat is hard, solid and tasteless.