You probably already know this, but this particular little guy or girl is leucistic. S/he has some melanoid pigment in her eyes - that's why they're black.
It's normal for leucistics to develop freckles, dark patches or 'masks' of colour particularly on their heads, a la these cuties:
(Photo from Sillylotls.com)
I haven't seen colour bunching around the gills before, but I am wondering if it's just another kind of mask.
Anyone with a leucistic or albino have the same kind of colouring? Now that I look again it looks as if the
colouring is under the skin. It could be pigment, or, as Bellaboo suggested, the site of blood flow. It makes sense blood will rush there when they're active, like blood rushes to our lungs.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.