Marble coloring or holes in the head?

[Virto]

My betta has similar pockmarks all around his head. They look very different from traditional hole-in-head disease.

Yours look to be the same. I wouldn't concern yourself with them since his behavior is normal.


IMG_6411crop by ElvoVirto, on Flickr

[Syriiven]

Ooooh, he's so shimmery! Thank you for the pic, it's nice to see the exact same thing somewhere else on an equally happy fish =)