1. Add tang with tomatoes. Tuna is rich, oily and salty. Tomatoes are anything but, which means that their sweet-and-sour juices can energize a can of tuna in raw or cooked form. Chop a plump one for ...

As one of the most widely consumed fish species, tuna can accumulate high levels of mercury due to its position at the top of the food chain. While tuna is a rich source of protein and omega-3 ...