A lot of LFS that really don't specialize in fish often have no clue of what they are ordering. They just look at their catalog, listen to what their source tells them sells best and order.
Most of them really don't care, either. Fish are just a commodity to them. I've a pretty good LFS nearby that was carrying dyed fish, but since I'm a very frequent visitor and have spent large amounts of $$ there, they listen to me. I made noises about the dyed ones and they don't get them in anymore. I hope it stays that way.
Roan