ok, from the discussions on here, I figured,, I'll try a bubbleeye.

purchased a 4" one last week, its in the quarantine tank with a few other
goldfish with a cover of anacharis & air stone.

today, I got a 1 1/2 " one,, (sooo cute),,, in the tank. go to check on it a
few hours later..........one eye 'bubble' is popped..
arrghhhhhhhhhhhhh

(wonder if it will swim lopsided)