So I am trying to start a freshwater community tank with my girlfriend (who has no prior fish experience). We bought 5 mollies and 10 minnows yesterday. 4 of the minnows and 1 of the mollies had died as of this morning. When cleaning them out of the tank (I assumed the minnows just hadn't been super healthy in the pet store), I noticed that there were baby fish in the tank. Since they were actual fry and not eggs, they are clearly mollies. Of the mollies left in the tank, two of them are hanging out on the bottom of the tank. Are these two pregnant as well? Having done some research, I'm afraid the mollie I thought was dead was the one who had given birth but too late to do anything about that now. What should I do? I know mollies cannabilize their young sometimes.