IMO tank raised species are always harder to get to host if they host at all. I have had 4 tank raised ocellaris and none have hosted. 2 I had for 4 months, 2 I had for 3, and in the past 2 months I had 2 wild caught, one true perc and one black and white saddle back. Both have hosted with in 1 minute of being placed in the tank. Its amazing to see the difference, my saddle back which is the one I have now actually feeds my anemone, its the coolest thing I have ever seen in my tank thus far.