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Raw tuna fish steaks
While most fish meat is white, tuna is pink or red in color due to much higher levels of myoglobin required for the fish's active predatory lifestyle. Myoglobin is an oxygen-binding protein commonly found in muscles. As active muscles use up oxygen, oxymyoglobin releases its bound oxygen to allow the muscles to remain active longer.
Per photo for single purchase
Per photo if 5 or more bought together