The stone on the head of yellow croaker is otolith, which is equivalent to human ear. It can not only produce hearing, but also regulate the balance of the body, so it is an important organ of fish. Otoliths play a role in keeping fish in balance. Otoliths can compress sensory cells and help fish adjust their bodies and maintain balance. The otolith of yellow croaker can be used as medicine and is called "fish brain stone".
Fresh yellow croaker has the following characteristics:
1, full eyeball, clear cornea, tight gill cover, bright red gill color, transparent mucus and no peculiar smell.
2, the meat is firm and elastic, the head and tail are not bent, and the depression can be recovered immediately after finger pressing.
3, there is transparent mucus on the body surface, the scales are complete and shiny, and the fish body adheres tightly and is not easy to fall off.
Old yellow croaker has the following characteristics:
1, cornea shrinks, gill cover is easy to uncover, gills become dark red, and mucus smells.
2, the muscles are slightly soft, and the depression cannot be recovered immediately after finger pressing.
3. The mucus on the body surface is opaque, and the scales have poor luster and are easy to fall off.
How to select high-quality large yellow croaker
1, look at the appearance
The natural growth of large yellow croaker is generally light and soft, and the back and upper side of the fish will appear yellowish brown, and the ventral fin will be yellow, shiny and bright, while the poor quality of large yellow croaker has no luster.
2. Look at the activity of large yellow croaker
Pseudosciaena crocea itself likes a quiet living environment, but once it is time to eat, Pseudosciaena crocea will become very active. Pseudosciaena crocea likes to eat all kinds of shrimp, crab, fish and mussels. The faster it is eaten, the better the quality.
3. Fish flavor
The large yellow croaker tastes good. When cooked, the fish will become very elastic, tender, sweet and juicy. If the fish has no elasticity, it is definitely not a high-quality large yellow croaker.
Step 4 look at the fish scales
The scales of fresh large yellow croaker are relatively complete and will not fall off. If it is found that the scales of large yellow croaker fall off at the time of purchase, it also shows that the meat quality of large yellow croaker has changed.