Outline of fish
Overview of and topical guide to fish
From Wikipedia, the free encyclopedia
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.[1][2] 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.[3]
What type of things are fish?
Fish can be described as all of the following:
- Natural resource – Resources that exist without actions of humankind
- Organism – Individual living life forms
- Animal – Kingdom of lifes
- Vertebrate – Subphylum of chordatess
- Seafood – Marine life regarded as food by humans
- Animal – Kingdom of lifes
- Organism – Individual living life forms
Types of fish
- List of fish common names – List of common names used to refer to fish
- List of fish families
- Predatory fish – Hypercarnivorous fish that sometimes actively prey upon other fish
- Forage fish – Small prey fish
- Demersal fish – Fish that live and feed on or near the bottom of seas or lakes
- Other types
- Aquarium fish
- Bait fish – Fish used as bait to attract predatory fish
- Coarse fish – Rough fish
- Farmed fish – Fish raised commercially in enclosures
- Game fish – Popular fish targeted in recreational fishing
- Oily fish – Fish species with oils in their tissues and coelom
- Rough fish – Fish considered less desirable to some anglers
- Whitefish – Several species of demersal fish with fins
History of fish
Evolution of fish
Fish biology
Fish anatomy
Fish reproduction
Fish reproduction – Reproductive physiology of fishes
- Bubble nest – Nest built by some fish and frog species to protect their eggs
- Clasper – Male anatomical structure found in some groups of animals, used in mating
- Egg case – Natural collagen casing found encompassing some aquatic lifeforms' fertilized eggs
- Fish development
- Ichthyoplankton – Eggs and larvae of fish that drift in the water column
- Milt – Fish seminal fluid and sacs
- Mouthbrooder – Animal that cares for its offspring by holding them its mouth
- Roe – Egg masses of fish and seafood
- Spawning – Eggs and sperm released into water
- Spawning trigger – Environmental cues that cause marine animals to breed
