I agree with the last issue tika.. This is not a behaviour that is wanted long term, but it is for sure fun to watch.. Out of my 9 rays its the same ray that does this, and also comes up on the edge when i feed and splash. I have never done anything to socialise my rays, i dont see the point at all.. It is cool to watch hand fed rays and everything, but i dont see the point. Its a piece of nature in my tank, and i like it that way 