1, family difference.

Perch for the animal kingdom, chordata, bony fishes, perch-shaped order, true perch family, perch fish; guppy for the animal kingdom, chordata, vertebrate subclass, bony fishes, spoke fins, perch-shaped order, true perch family, Siniperca genus fish.

2, morphological differences.

The body of the perch is long, laterally compressed, with a pointed muzzle, a large mouth, end position, oblique cleft, lower jaw slightly protruding from the upper jaw, the upper jaw extends to the bottom of the posterior margin of the eye, two jaws, plow bone and the mouth cover bone have tiny teeth, the back is slightly elevated, the dorsal and ventral surfaces are all obtusely rounded, the head is moderately large, slightly pointed, the length of the body can reach 102 centimeters, the weight of the general 1.5-2.5 kilograms, the largest individual can reach 15 kilograms or more; the Guillotine fish has a laterally compressed body, a elevated back, yellow or greenish color, and a yellowish or greenish color. The body of the guppy is laterally flattened, the back is yellow or light green in color, with black vertical stripes and small patches, the mouth is large and retractable, the lower jaw is protruding forward and upward, the two jaws and the muzzle bone are equipped with velvet-like fine teeth and developed canines, the dorsal fins are composed of rooted sharp spines.

3, origin difference.

Sea bass is mainly produced in the Sea of Japan, the Yellow Sea, the Bohai Sea and other places, California sea bass is native to the United States, Canada and Mexico and other places, four-gill perch in the Yellow Sea, Bohai Sea and the East China Sea are distributed, the river perch is distributed in the temperate zone of the Eurasian continent and frigid zone areas, in our country is only produced in the Eerqi River in Xinjiang and the Urumqi River Basin; guppy is a ferocious predatory fish, often other fish for food, but also for food and shrimp, often inhabited in still water or slow water bottom. In still water or slow water bottom, after the weather turns warm in the spring, often to shallow water along the coast foraging, foraging more at night, after the rain often spawn at the rapids, like the group, Siniperca chuatsi fish distribution is very wide, in addition to the Qinghai-Tibetan Plateau, the distribution of the country's major waterways.

4, efficacy difference.

Bass is sweet, flat, to the liver, spleen, kidney, with the benefit of the spleen and stomach, tonic liver and kidney effects, the main spleen deficiency diarrhea, dyspepsia, chancre, whooping cough, edema, weak muscles and bones, fetal restlessness, sores for a long time, etc.; guppy is sweet, flat, non-toxic, to the spleen, stomach, with the qi, blood, stomach, nourishing effect.