I got a 10 gallon and it is over stocked but all the fish do well. no fighting water stays good. I say if u can get away with it do it. I got 2 dojo loaches both 6 inches long 2 danios out of 10. 1 neon out of 10 (Cycling problem---ignorance) 6 harliquin rasboras and 4 of something else like the rasboras. I know most of u think thats a bad thing but like I said I keep the water great and fish are healthy. havn't had a fish die for bout a year. and don't worry I'm getting a 55 gallon for christmas so they will have a bigger home and I will have alot more fish. I know it's going to be over stocked but if I can get away with it I will.