Almost 20cm. 
========How did the fish friends of the Xianglong Aquatic Alliance comment==
Aman qq Yuyou said: What arowana is this?
A Gods left hand Yuyou said: Yellow Tail Dragon?Red Dragon use three primary lights%Can red dragon fish use horse-printed lights*Red Arowana 30000k lamp&What kind of lamp is good for raising red dragon)What light is suitable for red arowana$What color lights do red dragon fish use#Do you have to use side lights to raise red dragons?!Can red dragon fish use a side light?~Yulong International Red Dragon Fish Lamp$ Matera Fish，40 days home？
