Tank mates for clown knife and silver aro?

[lujor]

I am restocking my 220 with a clown knife and a silver arowana. I also want one more large fish or a small school of medium fish (3-5). I am considering some ~large catfish or 3-5 tinfoil barbs or 3-5 Semaprochilodus taeniurus (not sure of common name - look like tfb with horizontal bars on fins). Anyone have any tips or experience with this combo? Any potential problems? Would I be overstocked? Thanks in advance.
lujor

 

[spoofsjsc]

A motoro would look nice as a bottom dweller...

 

[albyoscar]

P Bass

 

[mr_jars]

i woulod definetlely roll with a motoro.. or any any kind of ray..

 

[WyldFya]

My aros and knife have a fire eel, and bichir for tank mates.

 

[rallysman]

In my 265 my Silver aro (24+") and Clown Knife (~18") live with a 15" Jag, 2 oscars (12"and 14"), a 16" Marbled Pim, 20" Chinese perch, and a 8" Common pleco.

 

[BichirAddict]

Why not a large school of Silver Dollars or Bala Shark. Are you looking for another aggresive or peaceful fish. May want to add if you possibly get either of them you will have to grow them in sperate tank