Black or silver's are a good Awo' to have with other fish but you will need to have a tank the minimum of 8x3 Wide Foot , as they both get about 2.5/ 3 foot long so need the extra width of the tank to turn propely . Also make sure the other fish are not too small for the Awo' to eat as they will eat anything which will fit in there mouths .
Large bottom dwellers are a good tank mates for Awo' something like bichir , Rays , Lima Catfish or even RCT' if the tank/pond is very big, Ect .
PBass , Oscars , Jag's and other similar sized fish are good for the Mid' levels of your tank .