Codes for Australian Aquatic Biota - Species coding system for aquatic organisms in the Australian region. Includes standard English names for Australian fishes.
The Cyclostomes: Class Agnatha - Outlines the characteristics of this class of primitive jawless vertebrates which comprises the hagfishes and lampreys.
Discover Life - Fish - Checklists, images, and identification guides for world fish.
East Coast Fish-Watch Project - Designed to help people to learn more about South Africa's marine fishes and how to identify them.
Find a Fish - Australian Museum collection of factsheets on fish species. Listed by scientific or common name, or search the database.
Fish - Information from Wikipedia on the classification, anatomy, respiration and general biology of fish, and other aspects of their life.
Fish - Information on this paraphyletic collection of taxa.
Fish, A Quick Course on Ichthyology - Basic introduction to fish biology, by Odyssey Expeditions Tropical Marine Biology Voyages. Covers taxonomy, anatomy, reproduction, schooling behavior, how fish swim, how fish sense, and thermal strategies.
Fish FAQ - Fascinating facts about fish from U.S. National Marine Fisheries Service Northeast Fisheries Science Center.
FishBase - Searchable global database containing information on 25,585 species (110,000 common names), 71,000 synonyms, 28,000 photos, and 21,000 references.
Fishes of Canada: Annotated Checklist - Attempts to provide a definitive listing of the scientific, English and French names of all Canadian fishes.
Freshwater Fishes of Iran - A searchable database providing descriptions and illustrations of species found in Iran.
Freshwater fishes of Iraq - A searchable database providing descriptions and illustrations of species found in Iraq.
Gray's Reef Fish Guide - An illustrated guide to the fishes of Gray's Reef National Marine Sanctuary off the coast of Georgia, USA.
National Collection of Fishes - With roughly 19,000 specimens, this is one of the world's largest fish collections and is located part in Washington, DC, and part in Suitland, Maryland.
Orðabók 7 - English index to nine-language fish common name dictionary. Find out what a particular fish is called in up to nine other languages. Also includes scientific names.