Hi. All my neons are well and healthy but ive noticed 3 (2 more so that the other 1) have gotton pretty tubby tummys. I was stumped as to why and thought maybe they were more greedy? Then after watching there behaviour I noticed the 3 tubby ones were paired off with non tubby ones. The non tubby ones would lay across ways infront/over the tubby ones heads then move and keep nudging them. What does this mean (if anything) Could it be there breeding and getting ready to lay eggs?? Or is it some other odd behaviour??