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http://www.aquariumadvice.com/viewforum.php?f=48 would be a better place to ask.. you may need to register (check the sticky there) to post.. but you are more likely to get a direct answer from there
They are not a common fish to find, there are a lot of false ones, and they tend to come in the same shipments of flying foxes, more by accident and lazyiness in packaging (it's hard to tell the difference quickly and they are pretty happy together.)