I've kept hrp before but never with Oscars and I was just curious as to how it would go, my Oscars are pretty calm and docile for the most part, they didn't like my green severum too much but don't mind my red tiger severum at all. The green one was a bully but I have a 125, so that'd be big enough for 2 Oscars, 2-4 hrp's till a pair forms and my 2 plecos and severum? So 7-9 fish for now?