My last thread on this wasn't very descriptive and as such got little traction. My girlfriend bought me a harlequin sweetlips for my birthday and I am wondering how long I can keep it in a 6 foot 150 gal reef before it outgrows it or eats its smaller tankmates (small tankmates: mandarin dragonette, occ clownfish, and lemon damsels)? The LFS she bought it at doesn't take returns on livestock so I have to find another hobbyist to take it. That may take awhile. The fish is only 3 1/2 inch right now.