I am the aquatics specialist at a Petco in MD. First of all my store never ever ever looks like the one picture earlier. But, I can say, the quality of the fish we receive are always a disappointment. Many of them show signs of ich and other disease before they are even put in the tanks (I can say I extremely disagree with many of my managers acclimation methods, as he's the one there on Thursday mornings to receive the fish). But it is clear that our vendors take very poor care of the fish they send. In particular, we received a Marine Betta last week that came in the bag, already missing it's bottom lip. Not even sure how that happens. It also doesn't help that the only approved medications are Herbtana and Artemiss. Both are all natural herbal medications for parasite and bacterial diseases. There are no other medications approved for use. These do great for the freshwater fish, but I have seen very minimal effects from these products on the salt. Nor does corporate provide us the means to set up an effective quarantine tank. While I would say I am a beginner when it comes to saltwater/reef keeping (lots of experience with fresh), our store looks much better than many other stores in the area. I really do the best I can, with the very limited products at my disposal.