California perch is spindle-shaped, with a large mouth fissure, oblique fissure, beyond the posterior edge of the eye, retractable jaw, prominent eyes, dark green back, turquoise side and gray eyes. From the snout to the base of the caudal fin, there are black spots arranged in a band, covered with tiny combs, with 9 hard spines on the first dorsal fin, 1 2 ~13 fins on the second dorsal fin, 3 hard spines on the gluteal fin,10 ~12 fins on the ventral fin/kloc-. The tail is a positive tail crack, slightly concave inward. The lateral line is complete, with villous teeth in Iq, stomach and pylorus. The digestive tract is 0.7 times of the body length, and the edible part accounts for about 86% of the body weight.

In the natural environment, California perch likes to live in sandy or muddy still water with low turbidity, especially in clear and slow flowing water. Generally active in the middle and lower water layers, often hiding in plants. It can survive in the range of water temperature1~ 36℃, and it begins to feed above 10℃, and the optimum growth temperature is 20 ~ 30℃. California perch is a carnivorous fish, with strong food intake and amazing appetite, and will kill each other, especially during the breeding period. Artificial cultured adult fish can be fed with fresh small miscellaneous fish, chopped chilled fish, or artificial compound feed.

California perch is popular with farmers and consumers because of its strong adaptability, fast growth, easy catching, short breeding cycle, delicious and tender meat, and beautiful appearance. After more than 2 0 years' development, California perch culture villages have been formed in many places in China, and the culture level has reached a relatively high level. The industrial division of California bass has also been clearly divided according to market demand. There are professional villages that specialize in providing fry, professional villages that specialize in continuous farming, and large-scale California bass distributors. The division of 1 in each link of the industry has been obvious, and the market demand, price and output have formed a delicate balance. Under this favorable development environment, the aquaculture output of California bass has been steadily increasing in recent years. On the one hand, it has benefited from the continuous improvement of aquaculture technology, mainly the improvement of water quality control technology, such as Shunde and Nanhai in Guangdong.

The yield per mu can reach 3,000 kg by transferring water with aerator and microbial preparation. On the other hand, thanks to the improvement of live fish transportation technology and the development of green channel in expressway, California I bass was transported by car instead of airplane, and the live fish transportation time can reach 804 hours, which promoted the expansion and stability of California bass market.