2, shootshell fish have more spines.

3, shootshell fish have fish scales.

4, shootshell fish and oncorhynchus mykiss.

1. There are asparagus with spines, but not particularly many.

2. The spine is one of the structures in the body of the fish, and plays an important role in their life activities, so the spine is basically a structure of every fish, as indispensable as the bones of mammals.

3. The spines are also important for the movement of the body of the fish.

4. Without the spines, the fish would not be able to perform complex life activities such as feeding and self-defense.