You cannot make a swordtail be male, that is only for genetics to decide.
Only dominate swordtail males of breeding size grow the long sword on their tails. 4 months may not be old enough. If there already is a large, dominate male in the tank, the young ones may not develop the swordtail.
~~Colesea
__________________
The above, of course, is strictly opinion. If you don't have your own, I'll gladly give you mine. |