Assuming your not jesting, I think the link to the wetweb site pretty much nails it on the head. If you had an 800G tank, maybe, just maybe you could pull it off. But the reality of the question is this: There is no pretty win/win end to this animals life in captivity but espeacially ina 125G (??!!) tank. You want to get rid of a couple fish? Net them and either give them to your LFS
or euthanize. If you can't net them, talk with someone locally who has the experience. For the fish, they may do it for free.