o.k. this will give you sizes of different breeds of sting rays and more. nice article. type in "freshwater sting ray" and when you get a list of articles just find one that says "freshwater sting ray", that page is in black color. there are few more nice articles, but i like this one the best. i can't get the exact address. you can't keep sting rays with plecos because of the sucker mouth. you can't keep rays with discus because they are too playfull and move around alot at night, and can stress discus to no end. it will work better if discus are grown, which mine aren't, the tank is huge, and there are many rays that would keep each other busy and keep them from playing humping with discus. :dive2:
