I have two female betta's, or atleast the fish store PetCo had them as female. One is pink with darker pink on the edges of her fins and the other one is very blue. I was wondering how to tell if they really are female. Both have very short fins and as I have been told thats how you know between male and female. I also want to know if a 5 gallon+ tank is big enough for the two of them and if I should get more incase they start to fight. I have had them since Valentines Day (they were a V-Day gift from my boyfriend) and they have yet to fight. I originally had three but one of them died (no idea why). Should I get more or is keeping two alright? And is my tank big enough? Ive often been told it's not big enough.