I seen this ad but I have a few concerns. Firstly, he initially posted the ad as an RTG, which is kind of alot for $550. However, it is apparently from "Dreamfish", which is suppose to be a very reputable farm. Secondly he changed the ad title to HBRTG. And the difference between RTG and HBRTG could justify the price, but the fact that he changed it makes me sceptical. Lastly, I don't like asian arowanas in a community tank like that. Unless he owns a scanner, which I highly doubt, they all have specific id number and chips and when you mix it like that how does the seller distinguish between certificates?? My LFS separates every arowana and writes in the corner a number, which I believe is used to match the certificate.