Hi, I am from the great land of Aus! I have a new 55 gallon-(200ltr) tank, freshwater tropical and I want to get an idaea of some medium sized predatory fish to keep, one specimen will be fine. I have looked at some American Cichlids, like the Jaguar and the Oscar...they are the two that I like so far, if anyone has any other fish to add, I would be more than happy to hear it, as I don't have alot of experience in fish and fish finding, breeds that are not restricted to the US or anywhere else would be handy, like i said, I am from Aus. thanks!