The best advice I can offer to you will be the same advie every additional poster will say:
Read the articles in the Stingray section of Bottom Dwellers.
Conduct more searches in the forums for Stingrays species and their respective compatabilities.
Conduct more searches for the various hardiness of each species.
You will see that Stingray are exceptionally beautifull but demanding. Do not be imtimidated by them. You can be a successful keeper.......just take your time and research a little more here on this site.
Respectfully, FireMedic.