Support WBURRed Fish, Blue Fish: Where The Fish Flesh Rainbow Comes FromAlastair BlandJune 17, 2014 ShareYellowfin tuna; Chinook salmon; lingcod; Pacific halibut. (Chang/iStockphoto; Debbi Smirnoff/iStockphoto; via TeachAGirlToFish; Andrea Pokrzywinski/Flickr)