I'm not allowed to have pets where I live, not even fish. But regardless, I have a 10g stocked with a Blue Ram, 4 Cardinals (was originally 7 but 3 have since died) and 1 Oto (was originally 2, but one died...I think he got fried by the heater). Blue Rams are very cool, but they need crystal clear water. At LEAST a weekly water change and a diet of frozen as well as flake foods.