I have done reading, I'm just asking for some personal experiences. I understand the adult size of Oscars, which is why I'm only planning on keeping one in a 90 gallon tank, are you telling me there is no room for a second tankmate?

Thanks for the info elevate this . That's one of the primary reasons I'm so intrigued by them -- they're more of a "pet" than just a fish in a tank. I love how the adult Oscars and Giant Gouramis engage me at my local fish store. Definetly very cool. Severums are interesting...