Here are a few links that we find useful during the course of our work in the Aquarium.
Online species information and publications
A global information system for fish, great as a start point for discovering more about different species.
Another superb site for gathering information about species.
Practical Fishkeeping magazine
The premier publication on aquarium care in the UK, with a great forum.
Dedicated fish sites
Northern Tropical News
Nice site run by a very capable aquarist based in the Northwest, good articles on care and breeding of some rare species.
British Cichlid Association
First place to look for information on this fascinating family of fish.
If catfish are of interest to you, then this is probably the best single source of information anywhere on the web.
Johnny Jensen's aquatic photography
Worth a visit just for the pictures.