I got 2 females about 3 days ago, they are in a 10 gallon sorority with a total of 3 female bettas. My smallest hasn't eaten since I brought her home. My original female plus the other one I bought the same day eat fine. Even when the smallest one is away from the others in the tank I put food in front of her she doesn't eat it. I am feeding the betta bits, and have even tried dried bloodworms. I just put her in the cup I bought her in and put food in there, she still won't eat. She acts like she's hungry and wants to eat, but doesn't.... What else can I do?