I have 3 and I was moving some stuff in my tank and niticed that they come right up to me and I accually have to grab them between my finger and thumb they don't seem to ming. pluss I found that they quite like it when u pet them. I know this seems strange but mine like it. now as soon as I put my hand in the water it comes straight up and just sits on my fingers and lets me pet it. has anyone else noticed anything like this? I think it's kinda cool myself.