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fish

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fish

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Also known as Pisces, fishes

A fish is an aquatic, anamniotic, gill-bearing vertebrate animal with a tough cranium to protect the brain, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break from the long tradition of grouping all fish into a single class (Pisces), modern phylogenetics views fish as a paraphyletic group that includes all vertebrates except tetrapods. In English, the plural of "fish" is fish when referring to individuals an

OverviewAI-generated

Fish constitute a taxon within the parent group Gnathostomata, classified under the rank of class with the name Pisces. This group is characterized by aquatic respiration and includes anatomical parts such as the lateral line system, inner ear, gill, and fin. They are studied through the field of ichthyology and have been present since about 530 million years ago. The organism is an aquatic animal and marine life that moves via swimming.

The habitat for fish includes marine, brackish, and freshwater environments. They serve as a source for fish as food, roe, cod liver oil, and shagreen. Uses include fish as food, bycatch, and recreational fishing. The taxon is referenced by 7,855 other encyclopedia articles and appears in sources such as Fishes of the World and FishBase. The Unicode character for fish is 🐟.

Synthesized by Vinony from 35 facts across 5 sources: Wikidata, PubMed, WoRMS, iDigBio, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Species

fish

Superclass

  1. PhylumChordata
Habitatmarine, brackish, freshwater

via

Museum specimens

Specimen records
1,263
With media
4
Family
Fish
Collections
MCZ
Recorded in
United States, Argentina, United Kingdom
iDigBio →

Research

393,993 papers

via PubMed

~37 min read

Encyclopedic overview

40 sections
Contents
  • Etymology
  • Evolution
  • Fossil history
  • Phylogeny
  • Taxonomy
  • Diversity
  • Ecology
  • Habitats
  • Parasites and predators
  • Anatomy and physiology
  • Locomotion
  • Respiration
  • Gills
  • Air breathing
  • Digestion
  • Excretion
  • Brain
  • Sensory systems
  • Cognition
  • Electrogenesis
  • Endothermy
  • Reproduction and life-cycle
  • DNA repair
  • Defenses against disease
  • Behavior
  • Shoaling and schooling
  • Communication
  • Conservation
  • Overfishing
  • Other threats
  • Importance to humans
  • Economic
  • Recreation
  • Culture
  • See also
  • Notes
  • References
  • Sources
  • Further reading
  • External links

A fish is an aquatic, anamniotic, gill-bearing vertebrate animal with a tough cranium to protect the brain, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break from the long tradition of grouping all fish into a single class (Pisces), modern phylogenetics views fish as a paraphyletic group that includes all vertebrates except tetrapods. In English, the plural of "fish" is fish when referring to individuals and fishes when referring to species.

Most fish are cold-blooded, their body temperature varying with the surrounding water, though some large, active swimmers like the white shark and tuna can maintain a higher core temperature. Many fish can communicate acoustically with each other, such as during courtship displays. The study of fish is known as ichthyology.

Excerpted from Wikipedia’s “fish” article, available under the CC BY-SA 4.0 licence.

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