A clown trigger isn't a good idea for a 125 either.
They get huge (1 1/2 feet+)
https://www.fishbase.de/summary/2300 . They are alone with titan trigger in their own genus, if that tells you anything.
When we got into saltwater in the 90's we had a in wall 75g. We bought our Clown Trigger that was apx 2" long, real baby and named him Bubba Joe.
About 3 years later we bought 200g mainly for him. A few years later he grew to about 12". He didn't bother anybody, small or large.
He was so,... funny ! Then he had glaucoma in one eye, then the other and stopped eating and sadly died. We still miss him today !
We had a cleaner wrasse and Bubba would turn sideways, turn almost white, get cleaned and flick his tail to say he's done. My niece made a little "May basket" in school. She would feed the tank, but mostly for Bubba, and asked if she could put his food in it, and I said ok. In about 3 minutes he picked it by the handle and swam off. After that, he's swim back and forth across the length wanting us to feed him !
When we would do a water change, he would lightly,....nip a hair off my arm. He'd also swim by me, then SPIT WATER AT ME. lol !
Now that was fine as a little guy, but at a foot long, he drenched me ! "THANKS BUBBA" !!!