After returning home tonite, I proceeded to change the water in my tank when I noticed one of my frogs in the moss and it wasn't moving. They all looked fine this afternoon before I left, and now this one looks like it died days ago. What happened? Head sunken, lungs look black, abdomen looks black, extremly dry. Please help, I don't want my other 3 to come to the same fate.
http://img.photobucket.com/albums/v459/superalty/My Frogs/DSC00138.jpg
http://img.photobucket.com/albums/v459/superalty/My Frogs/DSC00139.jpg
http://img.photobucket.com/albums/v459/superalty/My Frogs/DSC00140.jpg
http://img.photobucket.com/albums/v459/superalty/My Frogs/DSC00141.jpg
Tank conditions:
75-80 degree temps
2 watering holes
Misted 2 times a day
Day/Night bulbs rotated daily
Pinhead crickets every 2-3 days (dusted w/ vitamins)
Water changed daily
Tank cleaned weekly
All of the above was recommended by pet shop.

