Hey guys. I have decided to sell off all the current residents of my 120 gallon (5'x18") and replace them with one big fish. As much as I love my south american cichlids and catfish, I find that having a bunch of fish can be a real headache sometimes, and lately its been hard finding the time to meet each one of their needs. I also start college in late August and I am planning on selling the 120 right before I leave. That gives me little under three months to devote the tank to a monster. I want to buy a fish between the 12" and 16" mark that is relatively inactive but owner responsive. The max size of the fish doesn't really matter as long as it won't outgrow a 120 in three months, but I would prefer if the max size was under 24". I will make sure the fish finds a suitable home when I head off to college. Right now I kind of have my heart set on a Jelly Catfish (Cephalosilurus), but I would like to hear what you guys think. This will be my one chance to keep a biggie for the next couple years, so please help me go out with a bang!