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什么是海鲥鱼

更新时间: 2020-09-23 00:00:00     

海鲥鱼 ,体长椭圆形,侧扁。长约24厘米,大者达50厘米以上。头侧扁,前端钝尖,口大,端位,口裂倾斜,下颌稍长,上颌正中有一缺刻,后端达于眼后缘的下方。鳃耙细密。鳞片大而薄,上有细纹;无侧线,腹部狭窄,腹面有大形而锐利的棱鳞,排列成锯齿状的边缘。腹鳍极小,胸鳍、腹鳍基部有大而成长形的腋鳞,起点与腹鳍相对。尾鳍深分叉,被有小鳞。休背及头部灰黑色,上侧略带蓝绿色光泽,下侧和腹部银白色,腹鳍、臀鳍灰白色,尾鳍边缘和背鳍基部淡黑色。鲥鱼4月到6月间生殖季节溯河而上,在江河的中、下游产卵繁殖。

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