I live just down the street from the Mississauga Big Als. They are not bad, but last time I was there, late December, they did have half a dozen tanks with various fishes that had ick on them. When I pointed this out to a staff person, he didn't seem very concerned, and did not mark the tanks in any way. In my opinion, they should have been marked right away as not for sale. Most of the staff in the past have been polite, helpful and willing to listen, and I think you mostly get what you pay for there, though it is not cheap. Aquatic Kingdom seems to have very nice stock, not a fancy place, very plain, but clean tanks and stock, nice people, very helpful. Dragon Aquarium seems to have good stock too, though the front of the store is crowded, rather disorganized and kind of dusty, they seem to take very good care of their livestock. I haven't been in there for awhile though.