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珍珠雀的外形特点

作者:尘风发布:2014-10-14 8:38:20阅读:1,779次

珍珠雀的外形特点
珍珠雀

  珍珠雀的体型修长,形似炮弹,在其体侧有5-6道纵列的亮点,属于慈鲷科的珍珠雀喜欢挖沙。珍珠雀非一夫一妻制但倾向一夫二妻制,雌鱼会选择靠近岩石或壳的地方产卵。

  珍珠雀是浅水区最常见的钻沙亮丽鲷之一,他们是在岩石或贝壳中繁殖,因此在砂地岩石过渡区的边缘也常可以见到配对的个体,虽然他是广泛分布的种类,但是地理变异性小,北边族群的特征是背鳍边缘为红色(幼鱼为黑色),南方族群则为黄色边缘且上颔为黄色。

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