Hi there! In this area, for marine fishes, you basically have 3 places: Big Als in Gloucester, Innes Road, Big Als in the West, Kanata Centrum, and Marinescape on Carling avenue. That's it. For freshwater fishes, the two Big Als carry them too, but not Marinescape. Places like les Galleries de Hull have a pet store if I recall correctly. Also the St-Laurent shopping mall has a freshwater fish store. There is also another large pet store, near Rona on Innes road, that also carries freshwater fishes. The place seems OK. Unfortunately, Montreal is the better place to buy quality marine fishes. PM me if you want more details.
Bonsoir
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