Octopuses in the Red Sea often hunt together with other predatory fish—and sometimes hit them. New videos suggest they're keeping fish in line. Day octopuses in the Red Sea team up with up fish to ...

If you’re looking for simple, colorful additions to your freshwater aquarium, then you can go for the platyfish. Platies are small fish that come in many colours and easily adapt to life in tank ...

Fatty fish rich in omega-3 fatty acids, like salmon and anchovies, are most beneficial to heart health. But you may want to limit or avoid fish high in mercury. Experts often recommend fish as a heart ...