I have two tanks, one 15 and one 10 gallon. Here's how they are distributed:
15 Gallon: 1 platy, 2 Mollies, 3 red-eye tetras, 1 bn
10 Gallon: 1 gold dusty Molly (small), 1 dwarf platy, 1 oto (soon to get another and 2 cories.
Here's my problem. One of the Mollies in the 15 gallon is the...