Yes, tuna prey on smaller fish.
they hunt for fish such as salmon and tuna
tuna
barracuda
Tuna are predatory marine fish; they hunt smaller fish.
Wicked Tuna - 2012 Back in the Hunt - 2.1 was released on: USA: 13 January 2013
Wicked Tuna - 2012 Back in the Hunt 2-1 was released on: USA: 13 January 2013
A predator-prey relationship near where I live is dolphins-tuna-sardines. Dolphins are predators that hunt and eat tuna, who are the prey of dolphins. The tuna are also predators, but they hunt and eat sardines, who are the prey of tuna. So dolphins know to look for tuna where they see sardines, but they do not prefer to eat the sardines.
tuna, carp, cast, look, hunt
Among the foods using tuna as a major ingredient are sesame-crusted seared tuna, grilled tuna, tuna sashimi, tuna sushi, spicy tuna rolls, tuna fish salad, tuna noodle cassarole, roasted tuna collars, open-faced tuna melts, macaroni and cheese with tuna, tuna dip, tuna tartare, tuna carpaccio, tuna crostini, tuna empadanitas, salad nicoise, tuna sate, tuna kebabs, tuna souvlaki, tuna croquettes, tuna tostadas, tuna tacos, tuna burgers, tuna turnovers, tuna jerky, tuna balls, smoked tuna, and tuna ice cream.
I guess anything is possible but Tuna do live in the Ocean and are very very large, fast swimming fish who hunt in schools/shoals. I think you would need a very large aquarium to house a Tuna and a large wallet full of money to feed it and keep it alive.
The tuna is caught with huge nets by large fishing boats. The boats hunt the tuna through finding dolphins since the tuna run under the dolphins. They spread out nets and to round the fish up they set off small blasts in the water. This confuses the dolphins that are in the area and they begin to draw up the nets with big rollers on the ship. As they pull the net they collect the tuna and some of the dolphins. The dolphins try to jump out of the nets, get caught in the nets and drown, or are pulled in with the tuna. Eventually , the load of tuna is pulled in and placed in the hold of the ship. Some ships pack and can the tuna right there. Others take the tuna to packing houses. In recent years there have been efforts to stop the number of dolphin deaths in the process. Whether, this has really been done or not is debatable. This why some tuna companies cite on their product that the tuna is "dolphin safe".