Originally Posted by LittleBettaFish
Three females are probably going to cause problems if they are all in together. What usually happens is that the most aggressive two gang up on the weakest. I'm surprised your two females don't fight amongst themselves already.
To house female splendens together you need a group of at least five individuals (some say four but I think five is better). Otherwise you will tend to run into problems with aggression in the future.
Zebra danios are not really a 10 gallon tank fish either. They are an active schooling fish, and need a lot of swimming space that a 10 gallon just can't provide.
If the one gallon bowl is heated I would probably keep her in there. The other two may attack her if you choose to add her into your 10 gallon.
I was surprised myself that the two don't fight.
My oldest girl, who was the first betta in the 10 gallon, has always been very calm and docile, so when I rescued the second one, I decided to take a chance and stick her in there and hoped they wouldn't fight so I wouldn't have to remove her. Oddly enough, they have never gotten into any kind of altercation. They actually rarely leave each others' side now.
And the danios were the very first fish I got for that tank, before I found out they needed more space, and I've gotten too attached to get rid of them. I'll have to figure out what to do with them then.
I'll try to save up to get her her own tank and play it safe.