骨咽鱼科属于鲱形目动物，广泛分布在南美洲，澳洲和东南亚热带和亚热带地区，龙鱼属硬骨鱼纲、辐鳍亚纲、真骨下纲、骨舌鱼目、骨舌鱼科，原产地称之为Arowana，是西班牙语“长舌”的意思。

简介

cheapest and not a protected species . Silver Arowana have long fin and tail with its whole body silver in color . It can grow up to a very large size about 49 inches !

-Black Arowana- is the same as Silver Arowana but its fin and tail are black-color . It is not a protected species but slightly more expensive than a Silver Arowana . Black Arowana are harder to raise than Silver Arowana .

-African Arowana - originated from Africa and unlike other Arowana . Its head are more rounded and not a protected species too .