trying to net one of my male swordtail who needs moving to stop my females getting pregnant again, he's a big tough fella and he's very agile and fast, i have tried all the basic things of leaving the net in, trying to block him in and net him in all sorts of ways but he is just too fast for me and plus it does not help having 2 breeding traps in the tank, also while trying to catch him i am tearing up all of my decorations and plants which is releasing nitrate into the water! anybody got some smart fast advice for catching the little *****!