Of all the fish, it has more thorns. In fact, many common freshwater fish have many thorns, and the fish with upturned mouth is one of them. There are not only big thorns in the fish's body, but also some small thorns with irregular distribution, which are relatively soft.

Crucian carp is a very common fish in China, and they also have fishbones in their bodies. Like most fish bones, crucian carp bones also support the body, and crucian carp bones are not many.