I have a 300 gallon with a Rio tiger female and a castrexi with them I have Oscars, argentia, severum silvers, odoe, pompom knife fish arrowana and a few others. They all seem to get along now but more them likely I will set a another tank when fishes get bigger wood love to have my golden Oscar breed as well as my rays,but if not that is okay too. Totally inlove with the rays heyare feed 99% natural food they get fresh shrimp, smelt, scallops, calamari and earthworms they are feed twice daily and the other 1% of their diet is pellets