We recently put a small sponge filter in the tank and have been feeding them frozen baby brine shrimp. Stopped at a LFS on saturday and ended picking up a small double tail male that i would guess is between 2-3 months because it is starting to gain size and color, placed him next to my female and he started blowing a nest so now I have to choose to breed my regular fantail (red with hints of blue) male or the double tail male (grey right now but developing reds,blues, and other iridescent colors). I also figured out that I have a pretty good female because she has lots of color (blue body and red fins). I tried to get pictures and even a video but my camera doesnt zoom and focus enough for the pics or vid to come out. Also if i didnt mention it before the fry are free swimming, they are a week and 2 days old.