Lined up in order

The masses all behave predictably the same way. No one wants to single out. In general.
But we always have a few exceptions, breaking the pattern.
These screws were all lined up in order. Except one brave pattern breaker.
Thanks to Ingeborg for hosting the Abstract Thursday challenge.

The extra has a bit of Escher's Sky and Water I, but in this case it are liquorice fish (also here a brave one).