I keep a large catfish and a bluegill in my garage, I caught them over a year ago while fishing and decided to keep them. Orginally there were 5 bluegill (large ones), but they didn't do so well when I moved them into a smaller aquarium (from an 80 gallon to a 30), so there is now only one.
I did an autopsy (for fun), but I know they died of starvation (they stopped eating for over 2 weeks).
My catfish is about twice as large as that, and is extremely fat. It probably weighs a pound to a pound and a half. I used to feed the fish live goldfish or various sizes, but now they eat turkey and beef.
My bluegill is about as big as my hand (and I have big hands).
I also had a largemouth bass for a while, but it suddenly died one morning, and it was perfectly healthy only a few hours before. The last thing it ate was a crawfish.
I'll get some pics tomorrow.