Freshwater fish.
California bass, also known as largemouth bass, yellow perch or perch, bass in English, is naturally distributed in freshwater basins from central and eastern United States to northern Mexico in North America.
In the 1980s, it was introduced to China as an alternative species to sea bass. Most of the freshwater bass seen in the Chinese market are of this species. Wild populations exist in natural water bodies from mainland China to Guangdong in the south and Liaoning in the north.
The body surface is light yellow-green and the back is black-green. Its identification mark is a black horizontal stripe in the middle of each side of the body, extending from the head to the tail fin.
The California bass has an elongated body with flattened sides, slightly spindle-shaped, and an oval cross-section. The ratio of body height to body length is 1:3.5-4.2, and the ratio of head length to body length is 1:3.2~3.4.
The head is large and long. The eyes are large and protruding. The snout is long, the mouth is located high, the mouth cleft is large and wide, and it is an oblique cleft, extending beyond the back edge of the eye, and the jaw can be retracted. The jaw bones, palatine bones, and vomer bones all have complete comb-like teeth, which are many and small and uniform in size.
The whole body is covered with gray, silvery white or light yellow fine scales, the back is black and green, and the sides of the body are green. There are often black markings on the side of the body near the lateral line, arranged in a band from the tip of the snout to the base of the tail fin, and the abdomen is gray and white.
The first dorsal fin has 9 spines, the second dorsal fin has 12 to 13 rays, the anal fin has 3 spines and 10 to 12 rays, and the ventral fin has 1 spine and 5 rays.
The largest known individual in culture is 75 cm long and weighs 9.7 kg. The largest individual caught fishing in the river is 82.7 centimeters long and weighs 10.1 kilograms.
The protein content of largemouth bass is 17.97% to 20.15%, the fat content is 0.81% to 6.41%, the ash content is 1.24% to 1.41%, the moisture content is 72.12% to 79.98%, and the total of 17 amino acids in the muscle The amount is 14.19% ~ 16.47%, of which essential amino acids account for more than 44% of the total amino acids. To sum up, largemouth bass muscle has rich and comprehensive nutritional value, high protein and fat content, and the ratio of essential amino acids basically meets the needs of the human body. It is a high-end fish product.
Organized based on network information