I noticed this store a few months ago but finally went in to look around tonight. The shop is Aquarium Designs Unlimited
http://www.aquariumdesigns.ca (not the most user friendly website but it's better than some) and they are located in the Palisades Shopping Center (137 Ave and 127 st) I was spoke to one of the staff there and apparently they recieve livestock every friday and can bring in just about any livestock you want at no extra cost. If it was available from their supplier they would order it on Monday or Tuesday, and would recieve it on Friday.... Just hope this helps out anyone tired of trekking to the southside.
Brendan