I've had two polar opposite experiences with tank-raised clowns over the years. The first time, I picked up two tank-raised juvenile false percs that hosted in my LTA in less than a week. The second time I bought a pair, one of them finally found the anemone after he'd been in the tank for about three MONTHS, and his buddy never did figure out what that anemone was for. From what I've read of other folks' experiences, I think the odds are in your favor, but it does take a little luck, too.