a crayfish(= an animal like a small lobster, that lives in rivers and lakes and can be eaten, or one like a large lobster, that lives in the sea and can be eaten)螯虾:一种小龙虾(一种生活在河流和湖泊中的小龙虾,可以食用,或者一种生活在海洋中的大龙虾,可以食用)
My brother works as a cray fisherman in Tasmania.我哥哥在塔斯马尼亚做小龙虾渔夫。