Yellow croaker is the collective name for a genus of yellow croaker in the family Stenotaphylinidae, which is further divided into two kinds of yellow croaker, the large yellow croaker and the small yellow croaker, while the cucumber fish is just one of the aliases of the large yellow croaker.

The yellow croaker contains protein, fat, carbohydrates, vitamin A, vitamin E, niacin, thiamin, riboflavin, niacin, potassium, calcium, phosphorus, iron, zinc, magnesium, selenium, and other nutrients, and it is a high-quality source of protein.

The yellow croaker (cucumber fish) has a slender caudal peduncle, small scales, a body length of 40-50 centimeters, 25-27 vertebrae, and 8-9 rows of scales between the beginning of the dorsal fin and the lateral line. The yellow croaker is fat and thick, but slightly coarse and old, and is distributed in the southern Yellow Sea, the East China Sea and the South China Sea. Usually inhabits deeper sea areas, April-June to the offshore migration spawning, spawning scattered along the coast for bait, to fish and shrimp for food. In the fall and winter, they migrate again to the deep sea area.

The reason why the greater cucumber fish will be called the cucumber fish, and its meat and flavor has a very big connection, especially the male will taste with a special fresh cucumber flavor, so people give it such a strange name as the cucumber fish, and the cucumber fish is not only refers to the greater cucumber fish, but also contains the Ikaruga males, belongs to a kind of salmonid organisms.

Small cucumber has a shorter tail stalk, larger scales, a body length of about 20 centimeters, and 28-30 vertebrae. Small yellowtail meat tender and flavorful but slightly more spiny, distributed in China's Yellow Sea, Bohai Sea, East China Sea and the west coast of Korea.