I am going to get a tank anywhere from 90 gallons to 150 gallons, and I can't decide what fish to put in the tank. I think I want a fire eel and a gar. Anyone have any suggestions for what fish would go well with these fish. I want predator fish, but I don't have the biggest tank, so what would you guys recommend. Also, where would you guys recommend buying fish online, I am in Toronto, Ontario, so it would be great if there was a deal on shipping.