From what I understand, this blue color is caused by a protein. The blue color is in the mucus of the fish. You can actually scrape some of it off and put it in clear water and you'll see the blue pigment.
Quotes about pigment (10 Quotes)
Red-haired, fair skinned people have a higher instance of skin cancer than black-haired individuals. And the melanin pigment in the skin of red haired people differs chemically from the melanin in the skin of those with black hair. So researchers have tried to compare the red with the black pigments, but have not succeeded in comparing the isolated human pigments until now.
It's the only chalk that has enough pigment to be put on sidewalk and show up with bright colors. They get a good deal because this chalk is worth 17 in the stores.
The guest at the lower end of the middle couch, with three hairs on his bald head and his scalp streaked with pigment, who is digging in his big mouth with a toothpick, is a fraud, Aefulanus, He has no teeth.
The research has been a slow process because the pigments are black, and black's hard to study. If you get rid of the color in a pigment, you've destroyed the molecule.
Separation penetrates the disappearing person like a pigment and steeps him in gentle radiance.
He's someone who has always had a very strong, natural pigment, and he likes to spend a lot of time outside. So when you're outside a lot and you have a very tan-friendly pigment like that, you're going to have a tan that makes everybody else in Washington, especially in the winter months, very jealous.
Yes, linseed oil. I used to use poppy oil, but I have heard that poppy oil is given to cracking pigment too, so I use it no longer.
I knew exactly what I was, and there was no hang-up with me. None whatsoever. The fact that the pigment of my skin maybe being lighter brown than other people of my race, maybe some of them, but you know our race has all colors.
MUMMY, n. An ancient Egyptian, formerly in universal use among modern civilized nations as medicine, and now engaged in supplying art with an excellent pigment. He is handy, too, in museums in gratifying the vulgar curiosity that serves to distinguish man from the lower animals. By means of the Mummy, mankind, it is said, Attests to the gods its respect for the dead. We plunder his tomb, be he sinner or saint, Distil him for physic and grind him for paint, Exhibit for money his poor, shrunken frame, And with levity flock to the scene of the shame. O, tell me, ye gods, for the use of my rhyme For respecting the dead what's the limit of time --Scopas Brune.