in a 55g, a Jack Dempsey is far more appropriate IME. Oscars are rather large and messy for such a small tank. The Jack, though not much smaller, has less mass, is less messy, and isn't as active a fish as a fit and healthy Oscar is.
A 75g is my minimum size I think an Oscar should be in.
Thanks number6. I was kind of thinking that too, but a recent trip to my LFS ( :roll: ) had me thinking it might work. I guess it probably could work, but it is far from ideal, which, in turn means I won't be doing it.
You could delete this thread if you want, along with another similar one I started in the Oscar section.