I have a turquoise female betta in a five gal non-filtered tank. (Her label from Wal Mart said female.) She is beautiful. The color of a male betta but the finnage of a female betta. She also has a "humped back". I have had her for about ten months. My brother saw her and said she is a male not a female. What he doesn't know is that she has made a bubble nest twice since I have had her. Do females make bubble nests? If not, is it possible for this betta to be a male with deformed fins? Or, is it possible this is a female/male betta combined? I will try to post a picture if one is needed. Thanks for your help.