megcornell wrote:How long has this change in shell shape taken? It looks pretty drastic to me. It also looks more like the front end is "deflating."
Remind me of what their set up is like, and what you're feeding them.
Are you giving calcium supplements and access to UVB light?
It has just been recently. They have a 60 gallon tank with 2 basking floats. I feed them Wardley brand reptile premium sticks. They sometimes have fish food, but not very often. I also give them lettuce on occasion. They don't eat it very well, so I don't try often. It makes the water murky from floating around not getting eaten.

Every so often she eats one of our baby chiclids as well, but her main food is the reptile sticks.
I have not been giving them calcium supplements, but the food says it has fortified calcium in it. The light over their basking area is a halogen one, but I don't know if its UVB. There's also a fluorescent light in there. My boss put that in so I don't know if it's UVB either.
Is the "dip" in the center soft? For some reason it looks like it would be.
It is not. I thought it would be too, but it's hard as can be. She eats like a hog, so I don't think it's affected her overall health. That's one reason I thought perhaps the back was actually rising, because she eats so much.