从个体上来说,餐条、马口的成鱼个体小,而翘嘴的个体大。
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①餐条:嘴尖,体修长,银白色。成鱼个体小,一般长度为10厘米左右,少有超过20厘米者。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/11385343fbf2b21197cbe43dc68065380dd78edf?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
②马口:头部厚实,不如餐条嘴尖。身体有一定颜色,尤其是发情期的公马口鱼,身体色彩五彩斑斓,非常漂亮。马口成鱼体型小,通常成鱼长度15厘米左右,罕有25厘米以上者。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/58ee3d6d55fbb2fb96333861434a20a44623dcad?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
马口鱼名称的得来是因为这个独特的口部形状,这也是区别其他类似鱼类的重要特征。比如桃花鱼,身体形状和颜色和马口相近,但口部无此特征。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/1ad5ad6eddc451daf6386c98bafd5266d11632f2?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
③翘嘴:身体修长,眼镜大,嘴部大,下嘴唇厚,形成地包天的嘴型,因此得名翘嘴。翘嘴成鱼体系大,最常见的个体为40~60厘米长,重1~3斤。大者,可以长到长度一米以上,重量10斤以上。