wel, do i need another bottom feeder? i have a tank, a 10 gallon, with a regular filteration system. for now has 2 live plants, and a few fake plants, i also have a large rock in it. this tank is over stocked, i didnt know too much about tanks when i got it, and im still learning, i got the corie as one of my starter fish, and was later told that it was going to die for shure, guess what, 2 months later, and its the only one of the starter fish that is still alive. but, its FAT, :dance verry FAT, it rarely lies flat on its stomach any more, it kinda just heaves over, and sits there. i also have aobut 12 smaller fish, the bigger ones are about the size of a guitar pick, all either tetras, danios, and one angel. im assuming that the only reason that this corie survived is that there is a lot of waste in the taank from the other fish, but, now that the tank is stable, and this corie is getting well, FAT, should i consider buying another one, or another bottom feeder (maybee a shrip or something of the like) this tank gets frequent water changes (once a week, at least 60 percent change, and maybee an extra 20 percent if i need to replant, or add chemicals) any opinions?