Cyclop-eeze is rich in carotenoids, which tend to intensify the
coloration of fish that eat them on a regular basis. These creatures
are about the same size as brine shrimp nauplii, and I feed them to
some pretty large marine fish species, so I figured that rainbows
would enjoy them. I make all of my own fish food with our food
processor, typically using white fish, shrimp, nori, assorted greens,
various phytoplankton and zooplankton, a capful of a multi-vitamin
supplement, and vitamin C. I'll be sure to adjust the percentages of
components when preparing food for the rainbows.