Four and a half pounds of silver carp is good.

1. The fish bones are small. The four-and-a-half-pound catfish grows quickly, is large, and has small bones. The two-and-a-half-pound catfish is too small, and the fish is not fully developed yet. The meat is not tender enough and has many bones.

2. Rich in vitamins. Four and a half kilograms of silver carp has the advantages of high protein, low fat, high vitamins, good taste, and can strengthen the spleen and stomach. However, the content of vitamin d3 in two and a half kilograms of silver carp is insufficient. Eating too much can easily cause Diarrhea, restless sleep and other adverse reactions.