Female Betta Sororities
can be quite fun and amusing if done properly....but disastrous and stressful if done improperly, and even sometimes so when done properly. If you are really interested in starting one and are aware that even if you do everything right it still may not work and are prepared with separate tanks for all of your girls just in case....then you can try it.
But first, ask yourself a few questions...
-Sororities need to be heavily
planted....great emphasis on the heavy....to help break up the line of site and minimize aggression. Can you afford to drop a nice chunk of cash to heavily plant a 30 gallon with silk/live plants and various hiding spots?
-Are you prepared/are you read to prepare with properly-sized separate tanks for all of your girls for QT/if you need to separate them in the event that your Sorority doesn't work out for whatever reason? Do you have the time to keep all these girls separately/prepared to find some/all of them new homes in the event that things don't work out?
-Are you prepared/do you have the time to do proper and extensive research so you understand what your getting into/all the risks/how to do it properly?
-Do you have the time to watch your Sorority carefully to make sure everything is running smoothly, especially for the first few weeks or so?
If no to any of these....don't attempt a Sorority. As stated previously, only a more experienced keeper really should attempt this as they are risky even then but if you do your research and are prepared you should be alright.
As for the subject of your male....
Get him his own tank before you start your Sorority(if you choose to). If you keep him in with the girls most/all of your fish will end up dead. Bettas are aggressive fish....males should never
be housed with other males OR females.
How long have you had him? If not long, keep offering him pellets....he will eat eventually when he is hungry enough.
Can you tell us a little more about the tank? How long you've had it set up/had the male in it? What sort of plants/hiding spots does he have?
See, no tank is too large for a betta so long as it has enough plant cover....bettas come from densely planted, dark waters in the wild; what leads people to believe that they like smaller tanks is that they tend to feel 'exposed' without proper plant cover, and therefore stressed in larger tanks when there is too much open space. But if you have enough plants/hiding spots for him to feel comfortable....no tank is too large.
I hope I have been able to help and answer some of your questions :)