Problem with my fish
Hello. I am having a problem with my fish. Qustion is at bottom if you do not to read the history.
My daughter was given a fish by her aunt. It was in a clear plastic cup. I bought a 2.5 gallon tank, filter, etc. When I put it in, it seemed very happy, swimming all around.
It has been two weeks and we wanted some more fish. We are unsure what type of fish we have, as the container was unmarked. The pouch of food that came with it said Betta Food.
So we went to the store and bought two Bettas. We bought two females as we were unsure if we had a male or female and were told two males would fight.
When we put the new fish in the tank (still in their own cups, floating), they all seemed fine. The one in the tank would come and look at them then leave.
When we finally took the new ones and put them in the tank, our first one would chase one of the new ones around the tank. I put a clear bag in the middle of the tank to seperate them and it kept trying to get to the other side. It finally did, and they seemed to be fine.
Today I noticed that either the new ones grew or the original one got smaller as they are now the same size (the new ones were smaller at first).
After looking a little closer I noticed the fins seem smaller and ragged on my first one. Before it had a long tail and now it is short.
Is it possible that the females are nipping at the other ones fins? Could one of the new ones be a male, even though they were marked as females? What should I do?