I'd like to get a catfish for my 220g (72"x 24"w x30") but I don't know what kind to get. I like giraffe cats, but I'd like to have something that won't outgrow my tank. I want a bottom dwelling cat that isn't overly active, will grow fairly quickly, will get to at least 14", and that won't eat my other fish.
I also don't want something that will be hard to get or overly expensive. Does a fish that meets all these needs even exist? lol Any suggestions will be greatly appreciated. 
Stock List: (sizes are approximate not exact)
14" RB Pacu
13" Tire Track Eel
14" Silver Aro
6-7" Senegal Bichir
4 bala sharks between 5.5"-7"
10" Sailfin Pleco
I also don't want something that will be hard to get or overly expensive. Does a fish that meets all these needs even exist? lol Any suggestions will be greatly appreciated. Stock List: (sizes are approximate not exact)
14" RB Pacu
13" Tire Track Eel
14" Silver Aro
6-7" Senegal Bichir
4 bala sharks between 5.5"-7"
10" Sailfin Pleco