hey guys, i'm looking for a bottom feeder for my 120 predator tank. Been doing some research as to what is compatible with my yt barracuda. So far what I've come up with is either some type of cat, knife or an eel. I've already got a brown knife in the tank so I'm leaning towards a cat. I just dont know what type. Theres a few corydoras I like but i feel like they are all too small for such a big tank. On the other hand all the other catfish I find info on seem to be just too darn big. I dont want them to outgrown either the tank or my barracuda, as I've heard stories of cats swallowing all its tankmates after it gets big enough. I like the tiger shovelnose but im afraid 3 feet is a little too big for a 120. Can anybody help me find the right fish for this tank.