“Roy G. Biv” is an acronym made of the first letters of the seven colors of the rainbow, to help you remember: Red, Orange, Yellow, Green, Blue, Indigo, Violet. It’s also your photo challenge theme for this week!

I underestimated just how difficult it is to find all the colors of the rainbow in one natural setting that wasn’t literally a rainbow. So I went with natural in a man-made environment: the aquarium.

Enjoy the rainbow of color at The Daily Post.