I must agree that the fish at the chain stores that are on the central filtration system look about 500% better and more healthy than the fish at my local 'mom and pop' store that are individually filtered. Also at the mom and pop store there is NEVER EVER any fish in QT, however each and every tank has at least 1 if not more dead fish in it, usually being eaten or already half-devoured even in peaceful community tanks. The tanks are absolutely disgusting with black, mold-looking algae balls all over the substrate and most fish with shredded fins and bad color. However they are the 'specialty' aquarium shop and it is always bustling, they even have some huge tanks with a 3 foot red tailed cat and a huge arrowana, but I would not buy any livestock from there. The chain stores' centrally filtered tanks look absolutely pristine and the fish look wonderful compared to my LFS, even though sometimes they do have some fish in QT. I still buy all my fish online but I just have to laugh when I read about how central filtration/chain stores are bad compared to locally owned specialty shops with individual filtration, when in my experience, exactly the opposite is true.