Just for your info, these two aro farm were situated in Bukit Merah/Bagan Samak area. Might want to check it out.

1. http://www.blcarowana.com.my/index.html
2. http://www.pparowanafarm.com/main.htm

I contact blc arowana and they say that they have one showroom in Bukit Mertajam for hobbyist. Their farm in Bukit Merah is unaccessible to public viewing. Maybe if you could make an appointment, they will allow you to enter. But then individual purchase is not entertain. Usually bulk orders. But worth a try.