Hi, I'm relatively new to keeping an aquarium, and I recently bought a new 10gal tank. I went to the local pet store and bought everything to start it up (live plants, driftwood, bacteria starters). I was looking for a nice centerpiece fish and really liked the looks of the a rainbow shark - and with the advice of the aquatics guy I bought one. I realize now I should have looked into it more. Is this shark going to get too big? And what can I put in with it, if anything? I have a whisper pf10 filter and water heater in the tank already.