There's an AWESOME one on Wickenden St. If you are by the intersection of 95 and Wickenden you would go west and go like 4-5 blocks till you see the aqua building on your right, it's on a corner. If you reach the school on the right / that coffee shop on your left, it is one block back.
Aqua-Life is the name and George and his wife are really wonderful and nice. Super healthy fish (I even brought some Aspidoras I got there back to Boston) and they have pretty good prices on fish as well.