Don't know your types of fish? Red fish is a particularly good choice to get more vitamins and omega-3s in your diet -- ...

They have very little red muscle, the kind that allows you, a human, to run a mile or a tuna fish to migrate across oceans. Instead, blobfish have a lot of white muscle, which allows them to swim ...

Warmer fish can expand their range, in latitude and depth, and cruise faster because of increased red muscle output, benefits brought to an extreme in birds and mammals, whose stable body ...