Fish and Aquariums 
1. Aquamania 
Large aquatic, pet, and fishing tackle superstore in Lanshire, UK. Retail store is open seven days a week.
http://www.aquamania.co.uk/
Tropical and saltwater aquarium supplies for your fish tank. Based in Pennsylvania, US.
http://www.aquariumguys.com/
Aquariums, pond and aquarium supplies, and aquatic products. Also sections for dog, cat, small animal and reptile supplies.
http://www.aquariumworld.co.uk/
Offering a wide range of aquarium supply products for both fresh and salt water fish tanks. Everything needed to build and maintain a healthy, beautiful aquarium.
http://www.aquariumsnstuff.com/
UK based specialists in tropical and marine home aquariums. Provides the neccesary components to maintaining a healthy aquarium.
http://www.charterhouse-aquatics.co.uk/
UK vendor of aquariums and accessories.
http://www.theaquariumshop.co.uk/
One-stop shop for aquarium supplies; from protein skimmers and fish foods to fish tank filters and aquarium water pumps. Located in Ontario, Canada.
http://www.mops.ca/
Saltwater and reef aquarium store both online and locally in Vermilion, Ohio.
http://www.saltycritter.com/