So I woke up this morning and found a single molly fry swimming around the tank. I did not know one of my mollys was pregnant and I am assuming the other fish ate any other fry. Quite a surprise for a newbie's first fish tank. However, the really upsetting thing is that my 2 otos have completely disappeared! I picked them up a week ago and they have been doing great and really eating up any algae in the tank. But now I cannot find them anywhere, they have literally vanished. Could this be due to the molly's birthing? Could one or both of the mollys or one of my gold barbs or serpae tetras have completely consumed bot otos? This is really confusing. Thanks in advance for the help!