I don't know what part of our city you are wanting to venture into ...
I never went to the Surrey ( southeast ) side of Vancouver for fish, so I can't say anything about Paul's and the others there
One was mentioned I'd recommend,
Aquariums West, but they are a bit pricey
One that was
not mentioned that you may like is in North Vancouver ...
Formerly Mike's Pet Boutique is now
North Vancouver Pet Boutique
I got lots of really healthy plants and fish there
Mike is a long time fish guy ( 20 or more + years ) and always has lots of healthy stuff for sale ... just not the best prices on supplies
Bit of a hippie kinda guy ... you can't miss him
His right hand man, umm, Eric ?, knows lots too, and they are great to deal with
I have no ties to Mike, but I'll say I've known him for over 20 years ( he bought out his boss a long time ago )
Can't stay in business that long without doing it right ...