Ehh, I've seen worse! In 2007, I had 20-something fish thriving in a 10gal. Though, I had a few plants in there and kept up the WC's. I wasn't proud of that, but I ended up moving them to the 29 & buying a few more...
Up until the big die off in December of 2008, Everyone did great...they died from Chloramines even though I treated the water[other, very lightly, stocked tanks died off to the exavt same time].
Needless to say, I was pissed.