There aren't very many catfish in saltwater, so I started some research about 15 years ago looking for a viable catfish for saltwater aquariums, I like the look and activity of most, anyway I found some info on the Arius jordani that sounded good, I found a few and proceded to acclimate in my 55. The 55 leaked and I lost my school except 1 which made it into the 300 with the other eels and sharks. This link should give you a bitmore info on the fish.
http://fish.mongabay.com/ariidae.htm Have fun with it just dont mix them with the larger Pomocanths, they like them as lunch from my experience.