Amphibious fish
Videos
Amphibious fish are fish that are able to leave water for extended periods of time. About 11 distantly related genera of fish are considered amphibious. This suggests that many fish genera independent
Mudskippers (Periophthalmus gracilis shown) are among the most land adapted of fish (excepting, from a cladistic perspective, tetrapods), able to spend days out of water.
Lateral view of lungs of a dissected spotted lungfish (Protopterus dolloi)
Air breathing organ of a walking catfish
Labyrinth organ of a climbing perch (Anabas testudineus)
Gill
Videos
A gill is a specialized respiratory organ that many aquatic animals use for aquatic gas exchange, i.e. to extract dissolved oxygen from water and to excrete carbon dioxide. Branchia is the zoologists'
The red gills of this common carp are visibly exposed as a result of a gill flap birth defect.
Freshwater fish gills magnified 400 times
The red gills inside a detached tuna head (viewed from behind)
An alpine newt larva showing the external gills, which flare just behind the head