Reefmonkey
Aquarium Advice Activist
By the way, as a biology undergraduate working as a research assistant to a developmental biologist, I actually produced a lot of "fancy" strains of zebra danios, with the homeotic genes deliberately mutated to produce interesting CNS deformities. Of course, that was in the name of science. At that time, researchers elsewhere had produced recombinant zebra danios with ctenophore (kinda like a jellyfish) genes spliced into their genomes, which made them glow in the dark. At the time I thought it would have been very cool to play around with some. Now I see they are available at my LFS.