i have 4 new platies i bought, the guy who sold them really couldnt sex them since you catch whatever you can get from the tank, i roughly know how to sex these fish. do the males have a little tube there and the females have a fanned out anal fin? if so i have 2 females and 2 males in a 10 gallon tank. im wondering if thats a good amount and if i sexed them right. im really really hoping for babies soon! by the way there micky mouse platies because of the three small dots at the start of there tail fin.