Arowana Gender Index (AGI) 龙鱼性别鉴定
Asian Arowana (Scleropages formosus) breeding in the region is normally restricted to earthen ponds. One of the limiting factors in increasing production is the inability to determine the *** of the brooders. Determining the *** of the arowana is important in determining the *** ratio of the brooders to maximize breeding.
In a collaboration R&D effort between Qian Hu and Mr Alex Chang of Ngee Ann Polytechnic, a novel approach of *** determination of the brooders using the Arowana Gender Index (AGI) was developed. Now commercial ornamental fish breeders can use this information to better determine the model ratio of the two genders to achieve the highest number of juvenile Arowana. This method offers a cheaper, simpler and efficient alternative to the traditional expensive DNA studies.
The method uses the differences in the relationship among the linear measures of the male and female adult asian arowana. The method yields high percentage accuracy (70%) and the index will greatly enhance the productivity of arowana breeders. This index can be used on Arowana fishes that are one year old and above. As the index uses data from healthy and non-deformed fishes, the accuracy of the index is only applicable to normal, healthy fish.

LH (cm): HH (cm): WH (cm):
这篇文章小弟替大家翻译好了(蓝色部份),大家可以参考看看,但老实说,参考价值并不高,上述的方法,其实只说对一半,大家可以多提出自己的想法,小弟于讨论过后会提出自己的研究结果与各位分享:
Asian Arowana (Scleropages formosus) breeding in the region is normally restricted to earthen ponds. One of the limiting factors in increasing production is the inability to determine the *** of the brooders. Determining the *** of the arowana is important in determining the *** ratio of the brooders to maximize breeding.
亚洲龙鱼((Scleropages formosus,这是亚洲龙鱼的学名)的繁殖区通常受限于地球上某些特定水塘之中。其产值则受限于如何的识别孵卵之性器官?判断龙鱼的性别对于取得最大的繁殖率是非常重要的一件事情。
In a collaboration R&D effort between Qian Hu and Mr Alex Chang of Ngee Ann Polytechnic, a novel approach of *** determination of the brooders using the Arowana Gender Index (AGI) was developed. Now commercial ornamental fish breeders can use this information to better determine the model ratio of the two genders to achieve the highest number of juvenile Arowana. This method offers a cheaper, simpler and efficient alternative to the traditional expensive DNA studies.
在R&D与 Qian Hu and及and Mr Alex Chang of Ngee Ann Polytechnic双方的努力之下,以成熟龙鱼性别识别(AGI)取得了一个大约的孵卵性器官判断方式。而今商业观赏鱼得以使用这项资讯取得最佳的二性判断机率进而实现得到幼小龙鱼的最高数目。这样的方法通常更为廉价、简单并且相对于选择传统的DNA研究方式来的有效率。
The method uses the differences in the relationship among the linear measures of the male and female adult asian arowana. The method yields high percentage accuracy (70%) and the index will greatly enhance the productivity of arowana breeders. This index can be used on Arowana fishes that are one year old and above. As the index uses data from healthy and non-deformed fishes, the accuracy of the index is only applicable to normal, healthy fish.
这样方法係使用雌性与雄性的成熟亚洲龙鱼在线性的测量之中取得其不同的姻属关係。这个方法的结果得了高比率的正确性(70%)并且此识别法将使得人工养殖的亚洲龙鱼产值得到非常大的提昇。这个方法可适用于一岁或以上的亚洲龙鱼。而这个识别资料仅能适用于健康与非畸形的鱼隻，换而言之这样的识别仅适用于正常健康的鱼隻。
上文是借用鱼友的转贴文，与大家讨论一下这个问题，以下是小弟的看法，及对此法的一些解释：

以上仟湖所说的方法,小弟个人称为「侧边三角侧定法」,这个方法,说穿了便是运用比例的关係,以四个点的立体三角型来约测出龙鱼的性别,以龙鱼的上唇处为基点，（这帖中其实还少了一修线，不知道是故意的还是他们就是这样算的），先以上图来，ＬＨ这条线我们可称为邻边Ａ，而ＨＨ则称为底边，另外还得从ＨＨ的底点，再画一条线与上唇基点相接，这条线可称为邻边Ｂ，以这三条线所形成的三角型比例即可判断出一年期的龙鱼性别，若呈现较为正三角型的鱼，则为雌性，而呈现等腰三角型的则为雄性，关键其实在于邻边Ｂ的长短，当做完初步判断之后，再以ＷH画出立体三角型，这条ＨＨ若是雄性，则会使得立体三角型呈现出等腰三角型的型状，若是雌性则无法较倾向于正三角型，这便是上图所述的袐密所在了～～～