I like the colours on him.
As far as looking after him while you're recovering from your wisdom tooth extraction. Feed him the day before, change his water as latest you can before the op, and spot clean anything you see when you change the water. If you're just out of it for 2 days he'll be absolutely fine. If you take longer to recover you'll need to think about the water. He doesn't have a lot of other essential needs. The heating is on a thermostat, right?