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引言螯虾(Crawfish)广泛分布于除非洲以外的各大洲淡水水域中。全世界的螯虾共有300多种。美国有100多种。螯虾在大小和体色上的差异很大,路易斯安那州的侏儒螯虾完全成熟时仅长1英寸,而澳大利亚的马朗螯虾则达16英寸,最大重量达4磅。世界上个体最大的淡水大螯虾是塔斯马尼亚种类,重量可达8磅。螯虾的体色自奶油色直至黑色都有,其它如黄、蓝、红、绿等色也都有浓淡的不同。
Introduction Crawfish are widely distributed in freshwater waters on all continents except Africa. There are over 300 species of crawfish all over the world. The United States has more than 100 kinds. Crayfish vary widely in size and body color, with the Louisiana pygmy crayfish fully grown only 1 inch longer, while the Australian Mackerel reaches 16 inches and its maximum weight is 4 pounds. The world’s largest freshwater crayfish is a Tasmanian species that weighs up to 8 pounds. Crawfish’s body color cream color from black until there are other, such as yellow, blue, red, green and other colors also have different shades.