im unsure but from most of the posts i have read about keeping the 2 together, the fish always end up as lunch or dying from water pollution problems due to the turtles being extremely messy. do a search with keyword "turtle" and that should yield some results, if not then expand to the whole of mfk.
forgot to mention that not only are they extremely predatory but snappers get too large for some ponds never mind a 125.