Brackish Water
Brackish Water Aquaria FAQ, FishGeeks - Brackish Forums, Richard's Mudskipper and Goby Site, The Dragon Eel, or Violet Goby, Gobioides Brousson
Chats and Forums
A.S.A.P. Aquarium Message Board, Allexperts Fish Q&A, AquaChat, Aquaforums, Aquamall Forums, AquaRealms.Com, AquariumHobbyist, Aquatic Hobbyist, Aquatic Quotient Forum, Aquatic Zone
Clubs
Asia, Europe, North America, Oceania, Services for Clubs, Federation of American Aquarium Societies, FishGeeks, IFOCAS: The International Federation of Online Clu, International Betta Congress
Directories
AquaRank.com, Aquariumsite.org, AquaWorld Network, Captive Reefing - Aquaria Web Directory, Tropical Fish Internet Directory
Do-It-Yourself
Aquarium Electrical Systems, Aquarium Information Source: Aquaria Articles, Aquarium Lighting Guide, ATJ's Marine Aquarium Site: DIY, Double Filter Setup, FishandTips: Aquarium Stands, FishGeeks: Articles, FishGeeks: DIY Forum, Greg's Aquatic Engineering, Guide to Aquatics
Freshwater
Breeding, Chats and Forums, Clubs, Fishrooms, Foods and Feeding, Health, Species, All About Fish, Aquaria - by Patrick Timlin, Aquarium Guru, Aquarium Hobbyist, Aquarium Tropicana, Aquariums and More, Aquariums at Pet Resources, Aquatic Fanatic, Aquaworld, Auspet.com: Fish
Health
Nutrition, A Fishdoctor, Beginner FAQ: Stress, Chlorine and Chloramine, Fish Health, Fish Health Spa
Image Galleries
Fish Link Central Photo Gallery, Fish Pictures Page, Kevin Thurston's Collection of Aquarium Fish
Issues
Gene warfare to be waged on invasive fish, Pacific Aquaculture Information Services for Educa, Robert Novak v. APD List Members, U.S. Rules on Importing Tropical Fish: A Summary
Mailing Lists
Amazing Stingrays, Cowfish, Puffers, UniQuaria, Yahoo! Groups: Saltwater Fish Tanks
Marine
Chats and Forums, Hardware, Health, Invertebrates, Nano Reefs, Personal Pages, Reef Aquaria, Species, About.com - Saltwater Aquariums, Advanced Aquarist's Magazine Online, Aquarium Design, Aquariust's Den, CentralPets.com - Central Saltwater Fish, Directory of Australian Marine Aquarists, Fishdomain.com, Fishline, International Marine Aquarium Conference, J. Charles Delbeek's Home Page
Plants
Chats and Forums, Clubs, Cultivation, Databases, Help, Journals, Aqua Botanic, Aquatic Plants and Bogs, Aquatic Plants Digest, Aquatic Plants of Canada Page, Chuck's Planted Aquaria Pages, Cryptocoryne, Foxns Aquatic Page, Guide to Aquatic Plants, Interactive Water Garden, Jeff Ludwig's Planted Aquaria
Publications
Aquaculture Magazine Online, Aquarium Fish Magazine, Cichlid News Magazine, Diskus Brief, International, Freshwater and Marine Aquarium Magazine, Koi Carp Magazine, Koi-Bito Magazine, Nishkigoi International, Practical Fishkeeping Magazine, Tropical Fish Hobbyist
Species
A-Z of Fishes, Class Actinopterygii, FishBase, Project Puffer, Pufferfish.co.uk, Puffernet, The Puffer List
Web Rings
Addicted to Betta Fish, All African Cichlids, Angelfish Site Tour, Apistogramma and Dwarf Cichlids, Aquaria (Fishkeeping), Aquaria Web Ring, Aquarist Societies, Aquarium Catfish Webring, Aquascaping Web Ring, Australian Aquaria Web Ring
Add Fish to your Life
Hobbyist-authored articles on topics including converting a garage into a fishroom and encouraging parental care of fry in Angelfish.
Age of Aquariums
Contains articles, descriptions of aquarium setups, species profiles, and a large photo gallery.
AquaLink
Articles, bulletin boards, a trading board, and a diagnosis system for common diseases.
Aquaria Hobbyist
Fora on many aquarium-related topics, archived forum threads, and user contributed articles and species profiles.
Aquarium Frontiers
A regularly updated webzine 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.
Aquatic Realm
Forums, articles, and a guide to local fish shops.
Aquatics Review
Centers on reviews of local petshops including listings of fish sold and knowledge of staff. Also contains a listing of clubs and general fishkeeping pointers.
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.
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, 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.
Jim's Fishy Pages
How-to articles on fishkeeping and aquascaping, aimed at beginner to intermediately experienced aquarists.
Kraken
Miscellaneous articles, some reprinted from club periodicals, and website reviews.
LittleFishTank.com
Contains bulletin boards and chat organized by topic, a few articles on keeping various fish and invertebrate species, FAQs, and product reviews.
MEL: Fish and Marine Life
Information on breeding, pet fish, care and feeding.
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].
The Bailey Fish
Beginner's guide including information on care as well as pictures and descriptions of the owner's tanks.
The Krib
Articles, and archived usenet postings. Features Aquaria FAQ, and the Aquatic Plants Digest archives.
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.