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What kind of fish is a screw mackerel
Screw mackerel is mackerel. Mackerel is a carnivorous fish that feeds on snails in the river, so it is also known as the "snail green". Cyprinids are large fish in the genus Cyprinidae (Cyprinidae is only one species of cyprinids), commonly known as green grass carp, Wuqing, black mix, etc., generally distributed throughout the country, especially in the plains south of the Yangtze River is the most common, preferring to inhabit in the lower and middle layers of large bodies of water, the common individual 10 to 20 kilograms, the largest individual up to 70 kilograms or more. Cyprinid body sub-cylindrical, body length up to 1 meter, greenish black, fins gray-black, head wide flat, mouth end position, beardless, pharyngeal cephalic teeth molar-like, fish bile poisonous, abdominal round, no abdominal ribs, the tail is slightly flattened laterally, obtuse muzzle, but more pointed protrusion of the grass carp, the posterior end of the maxilla reaches the front of the eye margins of the following, the ocular spacing of the eye about 3.5 times the diameter of the eye, scales are large, rounded.