2, look at the color of the meat and skin. From the meat and skin of the fish can also distinguish whether it is cod or oilfish, cod segments of the skin is gray and white, light color, delicate meat, while the skin of the oilfish is gray and black, with a grid, the meat is harder and rougher.
3, look at the scales. Cod's scales are more special, the scales are smaller, there are small silver dots on the body, and cod's scales are very sharp, feel like a needle prick, while the scales of the oil fish do not have such a characteristic, which is the easiest to distinguish between the oil fish and cod place.
4, with the hand touch. Identify these two kinds of fish can also use the hand touch, but this method for frozen fish is more difficult to distinguish, so you can thaw them after the identification. Cod's surface is smooth to the touch, there is a layer of mucus membrane like feel, while the oil fish is relatively rough, it is easy to distinguish.
5, texture. Finally distinguish between cod and oil fish can also taste the texture, cod is a deep-sea fish, melt in the mouth, the meat is very delicate, like salmon can be dipped in horseradish and eaten raw, there is a unique aroma and fresh flavor. And oil fish fried in oil after a meat flavor, eat more greasy, meat is very coarse, taste is worse.