Interesting eshup - that certainly may be the case and they are still behaving the same after a few weeks of this feed.
I can't say that the flesh color has changed all that much, but their external coloring is definitely changed - which I think is what Cecil had said and the primary reason that he used it. Their fins are now markedly pink and their rainbow stripe is enhanced.
Neat stuff, too bad their days are numbered due to the temperature.
