Fish with birthmarks???

[Francois van Brederode]

Hi there,
I found this little blighter somewhere, And I just had to take it (along with 3 of its normal friends to not feel lonely)
Just thought I'd share.


Shame I don't have a better picture yet

The big spot over its eye is a lot darker then the rest of the body.
It is doing very well, eating a lot, trying to shift Sewellia with a lot of vigor and defending its rock with its life (almost)

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Looks like a healthy female.
I also have a G. ctenocephalus of months had these dark spots "birthmarks".
Even more pronounced, by the time they disappeared completely.