I would go to ALL TURTLES .com they have alot of info on just about everything to do with res,, but in the pic it looks like a yellow ear slider, any who I know they need more light than that , mine have a sun lamp, and the water has to be kept around 78, (very important) they will get respitory infecs, and that is a little costly, I would contact that site , they're pretty good about getting right back to you, or just contact a herpatologist.
good luck