there are mandarin fish in the north, but only in large reservoirs in the north. Siniperca chuatsi is widely distributed in China, from Heilongjiang to Honghe, from Honghu to Chaohu. Because its head and gill cover are golden yellow, it is also called yellow swordfish and bronze-headed arrow, and in some places it is also called wide-headed Siniperca chuatsi. Siniperca chuatsi is known as a fish tyrant in the water, and it is fierce and specializes in preying on fish.