巨口牛脂鱼俗称大口胭脂鱼,是北美洲淡水经济鱼类,也是美国池塘养殖鱼类之一。体圆筒形,体侧腹部呈淡橄榄绿色。头部较大,具有较宽的圆钝形的嘴。头长为全长的20%-25%;眼径为吻长的48%-60.5%。侧线鳞35-39个,背鳍长,具23-31个鳍条。巨口牛脂鱼在北美洲分布甚广,在美国, Giant mouth tallow fish, commonly known as largemouth carp, is a North American freshwater economic fish, but also one of the United States pond farmed fish. Body cylindrical, body-side abdominal pale olive green. Large head, with a wide round blunt mouth. Head length of 20% -25% of full-length; diameter of kiss length of 48% -60.5%. Lateral scales 35-39, dorsal fin length, with 23-31 rays. Giant tallow fish are widely distributed in North America, in the United States,