Hi, there. I am looking for a fish to occupy my 36 gallon bowfront tank. I am aiming for one large fish or a four or five medium sized fish. The larger possible the better. I had previously seen fish such as the tiger oscar but needed a double check that I wouldn't have to move it to a larger tank. I can't have anything that will grow out of the 36 gallon. Sorry for the long post, just wanted to give you a good amount of information.