OK, well Tara, (hum) you gotta stop the drugs!!!
(just teasing)LOL. If you are in deed completely
sober when you look at your betta late at night ;),
and if in deed his head is turning red, then you
might be in the presence of a radioactive betta.
These are very rare and usually found in remote
parts of Russia ;) but who knows, maybe this
one defected to the US ;).
Seriously, I can
only think of a couple of explanations to your (ever
so strange) phenomenon.
your betta is
losing color. OK, here is a new concept for a
few of you. Betta colors are organized in
layers, and some layers are always at the top.
For example, black covers red. So a betta might
be red, with a black layer on top. Sorta think
of it as a wall that has been painted several
times. One coat or red paint, then a coat of
black paint. Now, if you do not know there is a
red coat underneath the black, you would think
it is just a black wall. But peel off the black
layer of paint and you will see red underneath.
Likewise if your betta has a red layer under his
black layer, and if, when he sleeps, his black
pigment becomes less intense (a normal betta
thing), you would then be able to see the red
layer peaking 'below'. Hence making his head
look now 'red'. Could be one explanation.
you are looking at your betta with artificial
light (flash light, table top light, any light
source) at night. The light may refract and show
a different color. For example, and as an
interesting experiment, I want all of you
tonight to go get a flashlight (not TOO powerful
please, we don't want to make the bettas blind
now) and to gently shine it on your bettas. You
will be amazed how different some of them will
look under a flashlight! Primarily a lot more
blue or green iridescence will appear, some you
never even know was there!
You all have fun
tonight (and I trust you will, when the cops show up
at your front door thinking there is a burglary in
process in your home LOL).