I see what Nic is saying. It would make sense that a strict diet of krill (an animal from salt water) would be bad for fresh water fish that would not normally encounter this food source.
However, I think that the minute amount of krill in the NLS/Hikari, pretty much all foods, is perfectly fine for the fish and isn't going to do anything to them. The whole point of my post was to get side by side pictures of fish who have been raised on Dainichi foods vs those who were raised STRICTLY on other foods. Frozen doesn't count, most people feed random frozen every now and then.
So to get this back on track, and to make a bit of a "comparison", let's have people post what food they're using, if their fish(ies) were strictly raised on that food +/- frozen foods, where they got the fish (LFS, breeder, etc) and then we can see for ourselves who's got some nice coloring in their fish. Obviously this isn't exactly a scientific test by any means, but it will be interesting to see.