However, the cultured Pseudosciaena crocea is relatively leisurely living in the cage, lacking exercise, with a fat body, a bulging belly, dark yellow or gray skin color and a light lip color. In addition, the fins of wild Pseudosciaena crocea are generally clean and complete, and the fins are long. Moreover, when fishing from the sea, the swim bladder is killed due to the explosion of air pressure, and there is little painful struggle.
The scales and fins on the body will not leave traces of congestion. Those fins look a little red and broken, and the fins are short; Fish with red spots and scars must be farmed.
Because cultured Pseudosciaena crocea is usually kept in cages, it is easy to be injured when swimming in a narrow space. At present, some deep-sea cultured Pseudosciaena crocea are similar to wild Pseudosciaena crocea in appearance, but the meat tastes a little soft and the taste is not as pure as wild Pseudosciaena crocea.
Extended data:
Small yellow croaker (Larimichthys polyactis) is also known as small yellow croaker, vertebrate, bony fish, and also known as "small fresh, big eye, flower color, cucumber, ancient fish, yellow scale fish, small spring color, golden dragon, thick scale fish, also known as" yellow croaker "and" small yellow flower ". It looks like a large yellow croaker, but its head is longer, its eyes are smaller, its scales are larger, its tail stalk is short and wide, and there are 5-6 rows of scales between the starting point of dorsal fin and the lateral line, which is golden yellow.
Pseudosciaena crocea has the feeding habits of zooplankton and swimming animals, and has little food selectivity, mainly feeding on zooplankton, fish and shrimp, among which zooplankton are mainly copepods, fish are mainly gobies, and shrimps are hairy shrimp, brown shrimp, white shrimp with ridged tail and puffed shrimp.
In the southern Yellow Sea and northern East China Sea, Pseudosciaena crocea mainly feeds on swimming animals, but the feeding intensity is different in different life periods (wintering period, spawning period and feeding period), among which the feeding intensity is the weakest in wintering period (1~ March), the spawning period (April-May) is in the middle, and the feeding period (6 ~1February).
Pseudosciaena crocea is rich in protein, sugar, fat, calcium, phosphorus, iron, potassium, sodium, magnesium, selenium and vitamin A, which is of high edible value. Besides, it is found that Pseudosciaena crocea has high medicinal value in both traditional medicine and modern medicine research in China.
For example, swim bladder has the effects of moistening lung, strengthening spleen and nourishing qi and blood; Gallbladder can clear away heat and toxic materials, calm the liver and reduce blood fat; Fish phosphorus can be used as pharmaceutical glue; The testis is used to extract protamine and arginine; Ovary can be used to extract lecithin.
References:
Baidu encyclopedia. small yellow croaker