Hi: I have 2 RES turtles that I bought last year. One is now about 4" long while the other is only 3" long. Up until about 2 months ago, both turtles had great appetites. Now the smaller one doesn't see to eat any more. I visibly haven't seen him/her eat for weeks. The larger one still has a great appetite. The smaller one also spends a lot of time underwater with it's head tucked into a large ornament that I have in the tank. He still looks healthy, swims well and basks too.
Should I be worried about his lack of appetite?
Thanks

