Length, distribution area. According to the query fish encyclopedia network shows:

1, length: the length of the cannonball fish in 20 centimeters to 30 centimeters, tuna length in 100 centimeters to 150 centimeters.

2, distribution area: the origin of the cannonball fish is mainly in the South China Sea area, the tuna has a wider range of distribution, in the Indian Ocean, the Pacific Ocean, the Atlantic Ocean and other waters are distributed.