hrmm, im still scared with mine. i bought a 'female' on sunday, a nice Steel Blue Double Tail, only yesterday did i begin to panic when i am having second thoughts about her real identity. 'She' never eats enough to get a bulging stomach so it seems impossible for me to see if she has a ovipostor tube, ive searched and searched from the supposed place and i cant find it, even if 'she' is like, having her belly face me! now im getting worried, cause its near breeding time, and i want a backup girl if the first one doesnt work. since she is my back up, im going to use her in the future, but she has to be a girl first. now im thinking she could be a short tail double tail male betta...when i got home and put 'her' in a nice big 1 gallon, i found a few bubbles the next few days, which was kinda scary since she was placed in the girl section. then curiosity got a hold of me, i put the 'female' in a container that is betta-able and placed her inside the 1 gallon with my 1st female, whoa! they first didnt do anything, then the 'girl' began to flare with her flare gill as if she was a guy! the original girl became scared with fear stripes but she didnt have breeding stripes like she did when she was placed beside my male (that wasnt my idea, my cousin must've done it while i was gone!
) so now i guess ill have to look at that anal fin thing, where if its straight down, its a boy and if its angled, its a girl, *sigh* any other fun mix ups???