Monster Aquarium Canada is an online retailer serving aquarium enthusiasts across Canada, with a broad selection of aquatic life, tanks, equipment, and care supplies. Its livestock includes freshwater and saltwater fish, rare monster fish such as Arowanas, Peacock Bass and catfish, Axolotls, hermit crabs, and live coral. The store also offers aquariums and accessories for different setups, alongside aquatic plants, filtration systems, lighting, water treatments, fish food, décor, and other habitat essentials.

The range is designed for hobbyists building everything from a general aquarium to a large predator-fish display or reef setup. Monster Aquarium Canada highlights its selection of healthy livestock and provides guidance on creating suitable environments and supporting long-term care. New products are added regularly, including aquatic species, equipment, and accessories. Customers can shop online, with fast shipping advertised across Canada and hassle-free returns promoted by the store. The website advises customers to contact the administrator with their order ID after placing an order to receive payment details, and notes that orders ship only after funds have cleared.