Red fish can eat tuna, which is long, thick and round, streamlined, tapering backwards, with a slender tail base and a forked or crescent tail fin. There are obvious ridges on both sides of the caudal stalk, and a row of small fins behind the dorsal fin and gluteal fin. It is torpedo-shaped with a slightly round cross section.

Tuna characteristics:

Tuna is an active and agile carnivore. This fish has a smooth streamlined body and is one of the fastest swimming pelagic fish.

For example, yellowfin tuna can swim at a speed of 75 kilometers per hour. Most tuna live in groups, but some live alone. They live a nomadic life and sometimes migrate long distances. For some groups, migration is seasonal and may be determined by water temperature.