Wet Web Media:Articles on aquarium and pond set-up and maintenance, fish and invertebrate care, breeding, natural history, and taxonomy, photos, and information on starting an aquarium-related business.
Age of Aquariums: Contains articles, descriptions of aquarium setups, species profiles, and a large photo gallery.
Aquaria Hobbyist: Fora on many aquarium-related topics, archived forum threads, and user contributed articles and species profiles.
Aquarium Advice: Forums dedicated to a variety of topics.
Aquarium Fish Magazine: Magazine with articles about a variety of aquarium topics.
Aquarium Information Source: Contains a collection of articles, species profiles, and pictures. Also offers a newsletter.
Aquarticles: Database of articles about aquarium management, fish keeping, breeding, aquatic plants, saltwater aquariums, koi, ponds, goldfish, cold water fish, fish humour and aquarium club affairs.
Aquatics Unlimited: Articles and tips covering general and beginner issues, aquarium equipment, fish compatibility, maintenance including pests and parasites, saltwater, ponds, water chemistry, fish health, plants and a miscellaneous section.
AquaWeb Fish Resources: News, photos, forums and a large link list.
Breeding Tropical Fish: Information on the keeping and breeding of tropical and coldwater freshwater and marine fish including sections on basic icthyology, water chemistry, fish health, species profiles, a message board, and MSN group signup.
Creating a Tropical Aquarium: This is a guide to creating a Tropical Aquarium, and includes advice on maintenance and disease, as well as a lot of pictures of different fish species.
eFishTank: An online aquarium maintenance program to help aquarists monitor their aquariums. Graph water parameters, enter livestock and equipment info, receive email reminders.
Everything About Fish: Offers a brief history and the basics of icthyology, solid advice for beginners, a listing of families, genera or species suitable for the home aquarium, and an article about large-scale aquaculture.
FINS - Fish Information Service: Articles, photo galleries, links, FAQ, and species index for freshwater and reef aquaria.
Fish Geeks: Offers a database with over 1,800 tropical and marine fish and plants, over 5,000 fish photos, chat room, and family friendly forums.
Fish Link Central: Links directory to sites about fish.
Fish, Tanks and Ponds: Covers tropical, coldwater, freshwater and marine fish and inverts. Contains a forum, photo album, chat room, and various articles aimed at hobbyists with any level of experience.
Information and Advice About Fish: How to care for fish and aquariums, with setup, care, and handling instructions.
MEL: Fish and Marine Life: Information on breeding, pet fish, care and feeding.
Myfishtank.net: Product reviews, species profiles, and a bulletin board.
Pandora's Aquarium: Information on freshwater and marine aquaria. Includes Basics, disease, plants, fish and invertebrate profiles, links and FAQ.
Pet Fish Talk: Radio talk show covering all aspects of fishkeeping, includes archives of previous show topics. [Requires Windows Media Player].
Star dot Aquaria FAQ: FAQ assembled by posters on rec, alt, and net.aquaria.
The Bailey Fish: Beginner's guide including information on care as well as pictures and descriptions of the owner's tanks.
The Fishie Zoo: A collection of articles, species profiles, and forums with information to help you care for many different species of fish. Also contains articles about general aquarium setup and upkeep.
Tim's Tropicals: Information about freshwater and saltwater tropical fish, fish facts, compatibility and aquarium maintenance.