Good point. Are there any other wrasse that I could keep in a 29 gal because I don't love the pink streak or possum wrasse.I think what areefer is trying to say is not to put a fish in a tank that doesn’t make sense long term. 6 lines get mean when they reach maturity, usually a couple years in and they’re hard to catch. You may find yourself having to break down the whole tank (after corals have grown in) to get him out. I’ve been in that position for years with a royal gramma who picked off every fish in my 90 gallon and no matter what I tried, I couldn’t trap him. He had the tank to himself for about 2 years after his last tank mate passed until I finally had to move the tank to install new flooring so I took the opportunity to rehome the RG.