Hi Lindy, Keeping and sexing B .Splendens can be a confusing and frustrating experience at times,and misconceptions and contradictions abound. As you say occasionally a male fish will display what looks like an ovipositor this can occur in any of the varieties available but i think that most confusion regarding sexing bettas is with the short finned plakat variety, where young fish can sometimes be awkward to sex as they outwardly look very similar, It becomes really interesting if you have a male plakat displaying what looks to be an ovipositor but as we know males generally have longer, fuller looking ventral fins and display a larger "beard" when flaring,females have visible stripes when in breeding condition this should help people new to keeping bettas in sexing larger fish. With regard to keeping males and females together on a long term basis i would agree that its generally not the norm,they are solitary by nature and don't form bond pairs , having said that many years ago i kept a pair together in a heavily planted tank with several harlequin rasboras and dwarf corys. I had this pair together for three years in which time they produced several viable spawnings .As you say this is the exception rather than the rule,but then fish don't read the rule book! One other misconception is that only male fish build bubble nests, the two females i kept together would periodically build nests and deposit eggs, this was my rational for introducing a male , unfortunately they didn't share my reasoning and shredded his fins .this was done through the night when the lights were off, i call that sneaky!!. I too have tried a female only group a number of years ago consisting of seven fish bought at the same time from a dealer who'd had them for several weeks in the same tank. On introduction into a heavily planted tank all was well for a number of weeks until a pecking order had obviously been established this consisted of one particular female attacking the others over the space of three nights, again this aggression was only metered out after lights out! once i had established which fish was responsible , the one with intact finnage! she was rehomed and harmony returned to the group. hopefully Ian will read these posts and give a bit more information as to just how he has been keeping his bettas as he doesn't state if the males are being introduced to females or just being kept individually .Regards Alex