I think that if you inquire you will find that zoos and public aquariums do not accept "donations" of rescue fish, reptiles or other animals...at least, certainly nothing as common as a RTC...and have not done so for many years. If they did, there would be a moat full of 4-foot RTC's in every zoo in the land.
Don't know about places like Ohio Fish Rescue or Viktor's enterprise ( .avatar--xss { width: 21px; height: 21px; line-height: 21px !important; margin-right: 2px; }thebiggerthebetter @thebiggerthebetter ) but the plight of this species is really highlighted by the fact that we are discussing how to find somebody to rescue this fish...and it's only 2 inches long, indicating that the owner literally just got it!
Yeah...they grow that fast! Sorry, OP, I understand the appeal, but...unfortunately, for most people, the best possible advice regarding RTC ownership is...don't get one.
Very sound advice! I was going back to a time when I donated fish to Steinhart Aquarium in the 1980s, yet even then my fish were nothing to the size of RTCs.
I discovered Ohio Fish Rescue on YouTube. It's the most extreme case of a monster fish keeper's obsession gone wild that I know of--indoor swimming pool, 10,000-gallon tanks, and all sorts of large fish that eventually end up there. It's worth a look for me to keep my aquarist obsessions in check.