I would also like to add that you do not need to feed your stingray until it looks like it is ready to burst. "Big booties" should only be seen on pregnant females. Many rays kept in captivity are obese and perhaps this may be one of the reasons why many rays die without explanation. Your ray should not be bulging, rather plump with a nice thick tail. Grapedinox's new pup is a great example of what your ray should look like.
http://s131.photobucket.com/albums/...=view¤t=underwaterpicturesofbaby009.jpg
http://s131.photobucket.com/albums/...=view¤t=underwaterpicturesofbaby009.jpg