I first saw a deep red color change on my turtles belly. She's only a year old and I had taken it to the vet and put her on various antibiotics but it has yet to cure the redness. The vet says it is a respiratory infection. The turtle sometimes breathes with her mouth open which is another symptom, but I've already spend about a $1,000 in vet visits and still no cure. Does anyone know more about what this is or have any suggestions?