I recently got a 5.5 gallon fish tank and am curious about the quantity of animals I can have in the tank. I currently own six fish. I don't know their proper names, but I own one bottom feeder fish(the black ones that clean the tank) and five smaller fish that won't grow past two inches, as well as one snail.
I'm curious, would 2 frogs and/or a couple shrimp live comfortably inside a tank of this size? What are the limits when adding other types of animals to a fish tank?