Yes, it is possible. Even though they may be hard to see.
Yes
Yes it's possible.
Blue streaks, this is not a circus
It depends on wether or not the black haired person has any redhead genes in his/her family. If they got a redhead gene from one of their parents, grandparents, ect. Then it's possible...
Yes
yes
They may be harder to see than regular streaks...but yes.
There are so many different colour variations of Betta that red streaks in blue fins are quite common as are blue streaks in red fins. All it means is that the fish are cross bred.
what are you talking about
I think it is Katrina Hawley, but not 100%.
Yes, but they may be hard to see. But it is possible to do.
Blue streaks in the sky resembling blue rainbows can be caused by a phenomenon called cloud iridescence. This occurs when water droplets or ice crystals in the atmosphere scatter sunlight or moonlight, creating the appearance of colorful streaks or bands. The blue color may be due to the scattering of light by smaller water droplets.