whole foods is not a good source for anything. it was probably just mishandled. not because it was raw or left out, but because they constantly keep it out, and moist, for days on end and also have a lot of cross contamination. i do wonder what they are spraying on it, even if its just tap water, thats gross. as for other places, some times fish are treated with different chemicals to keep them fresh, or even when they are packaged. some fish are colored