Hmm, what was the first thing that popped into my head?
From Finding Nemo, this is Mr. Johanson. The flatfish that the other school fish pick on. If you have never seen the movie, click here to watch the first part of it on youtube.
A dab is a flatfish. Actually, the smallest flatfish there is. They are all light brown, not much orginality on their part. But I love the flatfish for their disguise.
They lay on the sand, and their "lack of orginality" helps them blend in with it. Since it has so many predators, this is a good technique that they use to defend themselves.
Don't you just love him?