As said previously, and as was stated in a recent thread, I wouldn't get a male and female convict unless you are willing to deal with a LOT of convicts. They breed and then they multiply exponentially. The Oscar, depending on its temperament, may or may not eat the babies, but a breeding pair of convicts will constantly harass the Oscar. Firemouths work well with Oscars and are pretty cool when they flare up at each other. Just make sure that whatever fish you add with an Oscar, that they have hiding places that don't have sharp edges. If the O gets it in his head that he wants to go see them he WILL push his way into wherever the other fish are, possibly gashing himself in the process.
