Revolutionizing tuna farming

Tsuyoshi Goto is on board a fishing boat owned by Kaneko Sangyo, a group company of Nissui Cooperation, one of the largest Japanese seafood processors. It’s 9 a. m., and the ship is near Kabashima Island in the Sea of Japan, about 90 kilometers from the mainland. It’s feeding time.

The bluefin tuna are excited, swimming circles around the aquafarm. They know what is about to happen. They are fed three times a week in the spring. Goto-san bends down, reaches into the sack behind him, and takes out a handful of oblong pellets. They look like a mix of chocolate and energy bar, but they definitely smell fishy.