Fishbase - An excellent resource of almost every species of fish
Corycats - Ian Fuller's Corydoras website
Aquaria Central - The Aquatic Supersite
Federation of British Aquatic Societies - The fishkeeping body in the UK
Anabantoid Association of Great Britain - Specialist group for labyrinthine fishes
British Killifish Association - Dedicated to the study of Killifish
British Cichlid Association - Specialists in Cichlids
Angelfish Micro Hatchery - Angelfish breeding information
Calypso Fish and Aquaria Club - Central London's Own Aquatic Society
Aquarian Fish Foods - A manufacturer of fish food and products
Betta Talk - The ultimate site for all Betta lovers
iFocas - The International Federation of Online Clubs and Aquatic Societies
Planet Catfish - Where the Catfish is a plenty good enough fish for anyone
The Cichlid Tank - The Internet's #1 Source for Cichlid Enthusiasts
Practical Fishkeeping - The most widely known UK aquarium monthly
Edkins Aquatics - Online aquatic supplies
Java Aquarium Plants - An online source for live plants
Fantasea Aquatics - Online supplier of fish and other supplies