My female has long fins though, people mistake her for a male, she even puffs out her gills when she's being dominant over her tankmate. I know she's a female though because she has an ovipositor, she's layed eggs before, and she has stripes. I think it will be difficult to sex these fry. The reason I want to breed is because it will be easier to breed females than to try and find some in the store that get along. Thanks for the confidence in knowing that they shouldn't fight much when raised together. What's this about water and not having females? I want as many females as possible. I intend to keep all the girls I end up with.
UPDATE: I got a male now. I was hoping for a superdelta or a double tail yellow male, but I got a nicely finned royal blue veiltail. The breeder that supplies my favorite store was from the south and was affected by the hurricane in some way or another and bettas are on hold for a while. Either way I expect nice looking babies. He's young, but he's learning to make a bubble nest, he's got a few bubbles started under two pieces of styrofoam. I had a few choices in the tank for making a nest under. He hasn't decided which he likes best.