I'm new to the fish game so I rely heavily on my LFS. Where I bought my first cichlids told me the fish I was getting were from Lake Victoria (a Yellow Lab. & demosani) and to stick to those fish exclusively because of their aggression. When I went back for more I bought a bumble bee and two orange zebras. All purchased from the "Lake Victoria" tanks. I was adding a bunch of new rocks to my tank so I decided it was a chance to add new fish also. I was looking at 2 cobalts and 2 acei but I asked what lake they came from because I was told by the first LFS not to mix. They told me Malawi and asked what kind I had. I told him and he said they were also Malawi. I was tired of asking for advise so I bought them anyway and they have all been living in my 55gal happily ever after. Just for piece of mind....which store was right and does it all really matter?