Dogface puffer changing colour?

[bix]

Hello everybody,

Lately I have noticed that when my dogface puffer goes down to his favorite sleeping spot he seems to change colour to the point where he is almost all white.

Is this normal and he is just trying to blend into his surroundings? As soon as he feels like coming out he's still swimming around actively and eating, and he changes back to his normal colour so he seems healthy?

I can take a picture tonight if that would help but I don't want to freak him out with the camera flash when he's trying to rest...

 

[Jimbo7]

Yea its pretty normal among all fish. My yellow tang used to go stark white at night. You are exactly right, its a natural camouflage from predators.

 

[bix]

Thank you for the response!!!