1. The difference between freshwater salmon and seawater salmon is the size and appearance. Saltwater salmon refers to Atlantic salmon, also called salmon. After the scales and scales are removed, the skin has a wilted pattern. The meat of Atlantic salmon is orange-red.

2. Freshwater salmon, whose scientific name is rainbow trout, is native to North America and is reddish in freshwater. The scales of rainbow trout are thin and dense, and they are round in shape. The body surface of the seawater is silvery gray with black spots, and there are pink lines on the side of the body. The skin of the fish is different, and the color and texture are also different.

3. Tips for distinguishing salmon from rainbow trout: Look at the size of the complete fish body: Atlantic salmon usually weighs more than 10 pounds and is 1 meter long. Rainbow trout weighs about 3-4 pounds, with a maximum weight of about 8 pounds, and only grows about one pound a year. Appearance: Atlantic salmon is silvery gray with some black spots. Rainbow trout have a pink line on their sides. Color and texture: Atlantic salmon meat has a bright color, the meat is orange-red, the fat lines are clear, the meat is firm and firm, and there are no blood stains or bruises. The flesh color of rainbow trout is reddish and the texture is scattered. Because the whole fish of rainbow trout is smaller than salmon, the patterns are relatively denser and the intervals between the patterns are narrower. In contrast, the flesh of freshwater fish is relatively loose.