Vincentii;3736195; said:your ray should be fine with your current stock. i kept mine with flagtails, arowana and oscars. never had any problems.
just keep an eye out for your polyterus. he may nibble at rays side's.
best wishes
price and size wise whats my absolute best bet? also .. if i have both side of my tank somewhat filled with stuff that im not sure if hed be able to get around but he still have the majority of the tank (pretty much whole center other then a 10" on either side say .. will he still be fine for space wise? i know NOTHING about rays are you can tell ...