Glenwood mall? You mean Crabtree?
Anyway I like FishWorld on Capital. They are kinda expensive for dry goods (get those online anyway, for the most part), but their fish almost always look real healthy. Fish Pros on Hillsborough is good too for their livestock selection, but I sometimes question their care for the animals, have seen some that look sick from time to time, but overall pretty good. A lot of nice people at both these stores.