Hello; Same for me. If there are any fish keepers near me I am not aware. Also big fish like Oscars need big tanks and if I had a big tank running it would already have fish in it.
I think a point should be stressed. I get that so many feel for the welfare of a fish. I recall we went around a few months ago over a neglected betta. For some the only thing that appears to matter is the living conditions of the fish. The law and other circumstances fall in several places down if at all.
I get the fish was abandoned and likely using a strict definition of the law the guy got what he deserved. However a fish is not like a dog or cat. With those they can be dropped off along a road somewhere and you drive a way. Plenty do that around my area as strays show up from time to time.
So I guess this is a wake up call for all with big fish like Oscars. If you get in financial or health trouble and cannot do right for it by someone else's standards, then you need a plan. My more likely scenario will be some ailment that prevents regular tank up keep.