when there are higher levels of it in the muscle tissue, the flesh will take on a deeper shade. According to the FDA, we should be eating two to three servings of fish per week. Red fish can be a ...

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 ...