I cant tell you how either. But they are the only one carries tung hoi goldfish in the entire country right? But I have been a big fish buyers for a few years and I only buy unique fish like tri colour ranchu and matt rachu where only tung hoi offers such range. I think the big broad tail ryukin and albino red eye ryukin also is tung hoi trademark.

I bought a pair of matt panda ranchu there recently and I certianly havent come across this variety elsewhere but Feng Shui Fish.