my ocellaris never hosted my huge gbta or small rbta. The female would get within the reach of its tentacles but that's it. I was on my 4th or 5th male (had the female bout 3 years) when I found him dead. That's a whole nother story (males would either die soon after bringing them home or live a few months at most and die - the last one got cuisanarted by a reversed koralia that I didn't see, I think. Just found his chewed up body being feasted upon by my cuc.) So I got a gsm that hosted within 5 minutes of introduction. N he liked the anemone so much he refused 2 come out n eat and therefore starved. I replaced him with another that is eating and he also was n the nem within hours. Fwiw I tried the pic of hosting clowns and the nemo algae clip without results. Some ocellaris just won't host unless its a ritteri or carpet. Even then, its not a lock. I dont know that I buy into the whole tank vs wild caught theory. The drive to host is innate, genetic, born from millenia of evolution. I dont c how generations of captive breeding could erase that. good luck with yours I do hope they host it!