Unforunately that is one that is usually being picketed because they sell puppy mill dogs
Regardless of how well they keep their fish, I can't support a store that supports puppy mills in any way, shape, or form. I did hear somewhere that Petland had stopped selling puppies and kittens...so maybe there is hope? Their website is still showing them as being sold, did they have them when you were there?
I have yet to hit Malawi Aquatics but I really do like Aqua World and Tropical World Pets