90 gal is a good Payara growout tank if you can upgrade in 6mo. to a year max, 90 gal is a good 11.5" Oscar tank, 90 gal is a good community tank for a Red Wolf w/ non aggressive tankmates. The combonation of the 3 is not good at all - the Oscar will eat the entire food supply, the red wolf would stress if not eat a payara half his size.