Big Fish Aquarium

Big Fish Aquarium is a Chicago-based fish and aquarium retailer serving freshwater and saltwater hobbyists. Customers can shop online or visit its store at 6622 W. North Ave. The brand offers freshwater and saltwater fish, WYSIWYG corals, aquatic plants, aquariums, and dry goods, including frozen and dry foods, filtration equipment, water treatments, aquarium kits, and other supplies. Its online catalog features livestock and aquarium essentials, while in-store arrivals are managed separately and may change quickly.

Beyond retail, Big Fish Aquarium provides aquarium maintenance, installation, home aquarium services, and expert consultation. The business also shares educational resources, including freshwater, saltwater, and coral care guides, as well as activities through Little Fish Explorers. Customers can explore membership programs and gift cards, and qualifying overnight livestock orders may include shipping benefits and live-arrival coverage subject to stated requirements. Big Fish Aquarium encourages shoppers to check availability before visiting, since store selection is first come, first served.