Salmon and mahi-mahi are loved by many people, it has rich nutritional value, although both are salmon, but there is still a big difference, then mahi-mahi is salmon? No, mahi-mahi and salmon are salmonoid salmon subfamily Salmonidae 5261 fish, but the two families are different, salmon is a genus of salmon fish, usually distributed in the north of the Atlantic Ocean in the Atlantic salmon. Salmon is another genus under the subfamily Salmonidae, mainly distributed in the Pacific coast, the origin is the Ussuri River in Heilongjiang, China. Secondly, there is also a difference in morphology. Salmon has a somewhat flattened body, a bulging back, and very dense and tasty meat, which is pink in color and very elastic. The length of the body of the mahi-mahi is about 60cm, with a high similarity to the spinner, the back of the head to the base of the dorsal fin will gradually bulge, the head is laterally flattened, and the mouth cleft is larger.