I agree with you guys you just never know. I have 2 small rbta's about the size of a fity cent piece and my maroon loves the heck out of them. Thank goodness he is fairly gentle and not mauling them. I have a perc to in the tank. About 5 days ago I bought a beautiful sebae anenome about 6" across, the maroon has went and checked it out but goes right back to his tiny RBTA's. and the perc so far shows no intrest. I am hoping that the perc wil host in the sebae and the maroon will stay in the rose's that way they are on opposite sides of the tank (they are not too fond of each other but tolerate one another) But patience is soooo easily said and is difficult to practice. I find myself trying to "talk" to the perc through the glass to coax him to host the sebae.