Hi Guys, i have a 2.5 bare bottom tank and it has a small sponge filter (It only has 1 sponge, not 2) and i don't know what fish i should put in it... I was hoping if i could put something like goldfish but i heard that they get big... Any goldfish that can stay about 2-3 inches? And some stoking ideas for the tank...(Please don't say Betta, Shrimp, Platies, guppies, corydoras, snails and African Dwarf Frogs because i have them in my other aquariums..