i read the sticky about not using the inch to gallon rule and i'm really confused as to what kind of formula to use to calculate how many fish to put in a tank. for instance: i have a 10g with a pair of dwarf gouramies and I want to put a pair of german rams in with them. I have read that the rams need at least 15-20g tanks but i don't know why. they're pretty small. also i have a 55g with a 6inch pleco, 8 inch pleco that i desperately want to get rid of, six neons, two angels, a two inch rainbow shark and some type of botia that hides all the time. not a clown loach. I've had the tank about a year, some of the fish were hand-me-downs. the angels and shark i've had about 7 months. I have no idea how to determine whether or not i'm overstocked. I want to get rid of the big pleco and get 2 pearl gouramies and six congo tetras. am i really going to be overstocked then?