Crucian carp soup is very nutritious. You can add some tofu or white radish. Fish is only picked on the stomach, and it is best not to give it to children in other places. Fish soup can be used to cook noodles or soak rice.

Both cod and perch are spineless, and they are delicious. Children generally like them. Cod can cook porridge, and perch can be steamed.

Hairtail and small yellow croaker don't have too many spines. protein is high, but it's best not to eat it if you feel unwell. Sea fish get angry.

The above is personal life experience. I hope it will be useful to you.