No, you are looking in the wrong place.
That looks like an Axis/Vegas 24.1 setup if so, remove the cold air return vent and you'll find what you are looking for. (This picture looks like it was taken by removing the panel on the passenger side rear bed.)
From that point, if you look towards your water heater you should see this:
The two valves are the hot water shutoff, and the cross over valve. Seen here ready for winterization (hot water is shut off and cross over valve is open). There is also a cold water shutoff below the vent pipe (I can reach it from here without having to remove the cold air return vent).
From left to right those valves are (in your picture):
- Fresh water shutoff (for winterization)
- Fresh water tank drain
- Cold water low-point drain
- Hot water low-point drain