Oscars grow to large for a 55 gallon dimensions. The tank is only 13 inches deep and that will not be enough room for your fish. Impressing friends is the last reason to have a fish. Buy something you like that will fit in the tank that you got. Tank busters will out grow a 55 gallon tank, so its not a Big fish tank. If you want to get something impressive then buy your self a RES (red ear slider) and do daily water changes. This critter will impress your friends and girls alike. Or build your self a plant tank with lots of little fish. That always amazes the guest when they stop buy.JohnnyReb said:Get an Oscar. They are like dogs inside an aquarium. Smart, tame, will eat out of your hand. Put on a good show hunting goldfish (for about 5 seconds...)
All around personable. But don't overstock with other fish... and nothing too small... If it fits in his mouth it will go in his mouth....
what most stores call a dinosaur eel or cuvier bichir.