Lots of locals I've met who can help rehome. I'll give a fish away before I keep an unhappy one!Having kept rather large fish in small tanks, in the past. I grew them out to sell later. It's how I stayed in the hobby. People paid a lot for grown fish to put into displays. Now its a lot different.
Clown tang was just to enjoy. But, she did have a backup home.
It's being able to understand if the fish is comfortable, or not. Some wild caught fish will never be happy. Just like wild caught birds.
Always have a backup plan if any fish becomes unhappy.