how about keeping them with other non aggressive fish. I've always wanted to get a jardini and keep em with silver dollars and clown loaches can i not even do that???
As I said ... you won't know until you try
In general, jars don't tolerate tankmates, but you may get lucky. One way to increase your chances is to grow them out together. Just remember that jars grow much quicker than most fish, so start the others first, or buy the jar much smaller.

