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匙吻鲟,我国也称美国鲟,隶属于鲟形目白鲟科匙吻鲟属。主要分布于密西西比河流域,是美国特有的一种大型名贵淡水经济鱼类。最大个体可达40—60kg,体长180cm。1989年由湖北省仙桃市水科所从美国加利福尼亚州引进匙吻鲟受精卵,在我国孵化并率先试养成功。匙吻鲟,吻呈浆状而区别于长江白鲟的作剑状,鳃耙甚密,重1200g的1~+龄鱼,鳃耙总数504根,鳃耙间距20—50μm。这种滤食结构从而决定了匙吻鲟的食性与花鲢相近,为浮游生物食性,能与青鱼、草鱼、鲫、鲂、鲴等鱼混养。匙吻鲟的适
Key sturgeon, also known as the United States, China sturgeon, belonging to the sturgeon-shaped sturgeon Key sturgeon. Mainly located in the Mississippi River Basin, is a unique large-scale US freshwater economy of freshwater fish. The largest individual up to 40-60kg, body length 180cm. 1989 Xiantao City, Hubei Province by the water from the United States Department of California introduced Keyhole sturgeon fertilized eggs hatch in our country and the first trial success. Key sturgeon, kiss was pulp and distinguished from the Yangtze River white sturgeon sword shape, gill rake is very dense, weighing 1200g 1 ~ + age of fish, the total number of gill rake 504, gill rake spacing 20-50μm. This filter-feeding structure thus determines the feeding habit of Key Paddlefish and silver carp similar to planktonic diet, with black carp, grass carp, crucian carp, 鲂, 鲴 and other fish polyculture. Key to sturgeons