Arowanas
Arofanatics.com, Arowana 4 Ever, Arowana Club, Arowana.us, Arowanas.com, Australian Arowanas
Botias and Loaches
AquaLoach, Bobs Loach Gallery, Johnny Jensen's Photographic Library, Loach Photo Gallery, Loaches, Loaches On-Line, The CassiDietsch Loach Reference Page, The Loaches
Catfish
All Catfish Species Inventory, Aquaria Central: Catfish Pictures, Clay's Royal Plecostomus, Corycats, Corydoras World, Loricariidae, Planet Catfish, PlecoFanatics.com, ScotCat, The Cory @ ScotCat
Cichlids
African, Breeders, Central and South American, Clubs, Hybrids, Cichlid Depot, Cichlid Forum, Cichlid News Magazine, Cichlid Research Home Page, Cichlid Room Companion, Cichlid-Central, Cichlids.com, Fish Enthusiast on the Web, Fishpost, Frontosa Home
Goldfish
Adam's Goldfish, Bristol Aquarists' Society, Coldwaterfish, Dick Da Fish, Glimmering Goldfish, Glimmering Goldfish, Goldfish and Ranchu Collections, Goldfish Corner, Goldfish Heaven, Goldfish in Indonesia
Invertebrates
Crayfish, Snails, Triops, Caridina japonica, Crustacea, Freshwater Molluscan Shells, Red Claw Crab Care, Robyn's Mollusk Page, Shrimp, Crabs and Crayfish
Killifish
Clubs, Alf & Anitas Killipage, AUNZZA Mailing List, Cynolebia - Killifish from South America, Everett Talavera's Aplocheilus Lineatus Web P, Floyd Souza's Killifish, Henrik's Killifish Homepage, KILLI.NET - The International Killifish Associatio, KillieTalk, Killifish From West Africa, Killifish Mailing Lists
Koi
Clubs, A Koi Vet, Cads Koi Carp, Cedarbrook koi, George's Japanese Garden, Jerry's Koi Pond, Joseph Japanse Koi Site, Koi & Pond Net, Koi Carp and Fish Ponds Information, Koi Carp Magazine, Koi Cymru Forum
Labyrinth Fishes
Bettas, International Anabantoid Association, Labyrinth Fish, Labyrinth Fish Mailing List, Snakeheads.org
Livebearers
Clubs, Endler's Livebearers, Goodeids, Show Guppies, Animal Library: Fish: Mollies, Description Sailfin Molly - Poecilia latipinna, External Livebearer Anatomy Refresher, Fish Ark Mexico, Gambusia affinis, the Western Mosquitofish, Gambusia Control Homepage, Laboratory Strain Guppies (Poecilia reticulata), Livebearers, Molly Profile, Raising and Care of Belonesox belizanus
Rainbowfish
Australian and New Guinea Freshwater Fishes, History of the Rainbowfishes, Rainbowfish OnLine Magazine, Rainbowfish Study Group
Algae Eating Cyprinids
The elusive Siamese Algae Eater (Crossocheilus siamensis) which is the only known fish to effectively eat red beard/brush algae.
AquaFriend
Detailed articles on tropical fish suited for home aquaria.
Aquaria
Descriptions of some algae eating cyprinids, plus a few tank setups.
Aquarium Information Source
Offers pictures and information on a variety of tropical species.
Asian Arowana & Freshwater Stingray
Offers information on Chinese beliefs, conditioning, maintenance, diet, health management, diseases, and breeding.
Atlas of New Zealand Freshwater Fishes
Offers a collection of information that can be searched by family, species, or common name.
Australian And New Guinean Freshwater Fishes
Care, photos, and natural history of rainbowfish, gobies, blue-eyes, basslets, and other freshwater fish found in this region. Habitat descriptions and photos.
Bud's Freshwater Stingrays
Contains details of maintenance, feeding, sexing, setup, tankmates, species profiles, picture gallery and links.
DKG Rivulus Studygroup
Natural history, photos, and discussion of the genus Rivulus.
Dwarf Puffers
Includes a forum and general information on Carinotetraodon travancoricus, the dwarf pufferfish, as well as information on the care, breeding, and sexing of them.
Exotic Fish
Basic water quality and feeding data for tropical fish.
Fish Central
Care and profile of many species of freshwater fish.
Fish Profiles
Care, behavior, and natural history of many species of freshwater fish.
FishGeeks: Tropical fish Database
Offers a database of information to assist with the care of various breeds.
Freshwater Fishes of the World
Information on keeping, feeding, and breeding different fish. Categorized by type, with pictures.
Kings of the Aquarium
Devoted to large freshwater fish such as Arowanas, Snakeheads, and large South American cichlids.
Master Index of Freshwater Fishes
Articles on freshwater fish and plants in 60 books and selected issues of 6 magazines, organized by species, as well as a few online articles.
Mongabay: Fish Species
Offers detailed information about various species.
Pleasant Goldfish and Freshwater Fishes of Japan
Information on common goldfish keeping and Japanese freshwater fishes.
Randy's Aquaria
Gallery of photos and information about various tropical breeds.
Rays Freshwater Stingray
Articles on how to keep them, species profiles, breeding data, spawning log, photo gallery, forum and links.
Spike's Everglades Aquarium
Offers pictures and information about a variety of fish native to Florida.
Stingray UK
Articles on the care of Freshwater Stingrays of the genus Potomatrygon. Includes photo gallery and links.
Tropical Fish of South America
Articles regarding South American fish suitable for home aquaria. [Suite101.com.]