dark setting? sometimes…still refrain from flash

There are certain times when it’s dark, when it’s still best to refrain from using a flash. Look at this picture below. Here are my settings:
Camera setting = manual
ISO = 1000
aperture = 3.2
shutter speed = 1/160

And, how different would this picture have been with a flash? In my opinion not as good. This is real life. These are my little boys on a visit to the Aquarium. Not a photo shoot or anything fancy. Real life.

Related posts:

1. Turn off your flash (point and shoot)
2. Turn off your flash (SLR camera)
3. how to take a picture inside in low light, without flash