Outline of fish

The following outline is provided as an overview of and topical guide to fish:

Fish – any member of a paraphyletic group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups. Most fish are ectothermic ("cold-blooded"), allowing their body temperatures to vary as ambient temperatures change, though some of the large active swimmers like white shark and tuna can hold a higher core temperature. Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high mountain streams (e.g., char and gudgeon) to the abyssal and even hadal depths of the deepest oceans (e.g., cusk-eel and snailfish). At 32,000 species, fish exhibit greater species diversity than any other group of vertebrates.

What type of things are fish?
Fish can be described as all of the following:


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Types of fish

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 * Other types
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 * Other types
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 * Other types
 * Other types

History of fish

 * History of fishing

Evolution of fish

 * Prehistoric fish

Fish biology

 * Ichthyology
 * Ichthyology terms
 * Ethnoichthyology
 * Diversity of fish

Fish anatomy
Fish anatomy
 * Ampullae of Lorenzini
 * Anguilliformity
 * Barbel
 * Dorsal fin
 * Electroreception
 * Gill
 * Gill raker
 * Gill slit
 * Glossohyal
 * Hyomandibula
 * Lateral line
 * Leydig's organ
 * Mauthner cell
 * Otolith
 * Operculum
 * Pharyngeal teeth
 * Photophore
 * Pseudobranch
 * Scales
 * Shark cartilage
 * Shark tooth
 * Swim bladder
 * Vision
 * Weberian apparatus

Fish locomotion
Fish locomotion
 * Fin and flipper locomotion
 * Amphibious fish
 * Walking fish
 * Flying fish
 * Undulatory locomotion

Fish behavior

 * Aquatic predation
 * Bait ball
 * Bottom feeders
 * Cleaner fish
 * Diel vertical migration
 * Electric fish
 * Filter feeders
 * Forage fish
 * Hallucinogenic fish
 * Migrating fish
 * Paedophagy
 * Pain in fish
 * Predatory fish
 * Salmon run
 * Sardine run
 * Scale eaters
 * Schooling fish
 * Venomous fish

Fish habitats

 * Coastal fish
 * Coldwater fish
 * Coral reef fish
 * Deep sea fish
 * Demersal fish
 * Freshwater fish
 * Groundfish
 * Marine habitats
 * Pelagic fish
 * Tropical fish
 * Wild fish

Fish as a resource

 * Natural resource
 * Fish as food
 * Fish farming
 * Aquaculture
 * Fishing industry
 * Fisheries
 * Fishing

Fish conservation
Fish conservation
 * Overfishing
 * Habitat destruction
 * Environmental effects of fishing

Fish-related recreation

 * Fishkeeping
 * Recreational fishing
 * Angling

Fish-related organizations

 * American Society of Ichthyologists and Herpetologists
 * Gilbert Ichthyological Society
 * Ichthyological Society of Hong Kong
 * National Fish Habitat Initiative
 * North American Native Fishes Association

Fish-related publications

 * Fishes of the World

People influential in relation to fish

 * Jacques Cousteau
 * William Beebe
 * Edwin Philip Pister
 * Carl Leavitt Hubbs
 * David Starr Jordan
 * Louis Agassiz
 * Robert Rush Miller
 * Wendell L. Minckley