Yellow croaker and yellow croaker are two very close fish, and yellow croaker is one of the species of yellow croaker. Although yellow croaker belongs to yellow croaker, it is not yellow croaker. Yellow croaker is also known as rockfish, belongs to the class of fish, rockfish family. The yellow croaker belongs to the same family, Staphylinidae, and the yellow croaker is in the same genus. There are two sizes of yellowtail, one is the big yellowtail and the other is the small yellowtail. One of them is the yellow croaker, which is generally between the size of the large and small yellow croaker. The yellowtail can be bigger than a person, while the yellowtail is at most as big as an adult's palm.