Brown Bullhead: Ictalurus nebulosus - Fact sheet, with photograph. Channel Catfish: Ictalurus punctatus - Fact sheet, focused on the occurrence of this fish in the U.S. Great Lakes. Includes an image. Catfish, the Basics - Introduction to Family Siluridae, the catfish, with particular focus on the species Silurus glanis, the European Wels Catfish. Covers distribution, behaviour, sexual differences, and spawning. Includes photos. Armored Catfish Picture and Description - About the Callichthyidae family, or armored catfish, with more than 50 species native to the streams of South America, including genus Pterygoplichthys. Some are now found in Florida. These fish are known to "walk" on land using their pectoral fins. Catfish Biology and Identification - Information about three species in Minnesota. Vermiculated Sailfin Catfish (Pterygoplichthys disjunctivus) - Discussion and photos of this introduced nonindigenous species in Florida. The Loricariidae - Dr. Jonathan Armbruster's site devoted to the largest family of catfishes, including the fish typically sold in the aquarium trade under the name pleco or plecostomus. Includes list of taxa, identification key, and phylogenetic tree. Ariopsis felis: Hardhead Catfish - Photograph and information on this species, including its taxonomy, description, habitat, distribution, life history, population biology, physical tolerances, community ecology and its importance in the fisheries round Florida. Bagre marinus: Gafftopsail Catfish - Photograph and information on this species, including its taxonomy, description, habitat, distribution, life history, population biology, physical tolerances, community ecology and its importance in the fisheries round Florida. Hoplosternum littorale: Brown Hoplo - Photograph and information on this species, including its taxonomy, description, habitat, distribution, life history, population biology, physical tolerances, community ecology and invasive information. Clarias batrachus: Walking Catfish - Photograph and information on this species, including its taxonomy, description, habitat, distribution, life history, population biology, physical tolerances, community ecology and invasive information. Ictalurus punctatus - Research project by Kirk Gallant on the Channel Catfish, including its identification, habitat, adaptation, nutrition, history, reproduction and interactions with other species. Channel Catfish - Student project on Ictalurus punctatus including classification, habitat, adaptation, nutrition, reproduction and interactions with other species. Airsac Catfish: Heteropneustes microps - Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation. Cave Catfish: Clarias cavernicola - Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation. Clanwilliam Rock-catfish: Austroglanis gilli - Photographs and information from ARKive on this rare South African species. Mexican Blindcat: Prietella phreatophila - Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation. Toothless Blindcat: Trogloglanis pattersoni - Photographs and information from ARKive on this species endemic to underground waters in Texas, USA.