The Fish Portal

Ocellaris clownfish (Amphiprion ocellaris) in Papua New Guinea

A fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, 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. Most fish are cold-blooded, their body temperature varying with the surrounding water, though some large active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communicate acoustically with each other, such as during courtship displays.

Fish have been an important natural resource for humans since prehistoric times, especially as food. Commercial and subsistence fishers harvest fish in wild fisheries or farm them in ponds or in breeding cages in the ocean. Fish are caught for recreation, or raised by fishkeepers as ornaments for private and public exhibition in aquaria and garden ponds. Fish have had a role in human culture through the ages, serving as deities, religious symbols, and as the subjects of art, books and movies. (Full article...)

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The goblin shark (Mitsukurina owstoni) is a rare species of deep-sea shark. Sometimes called a "living fossil", it is the only extant representative of the family Mitsukurinidae, a lineage some 125 million years old. This pink-skinned animal has a distinctive profile with an elongated, flat snout, and highly protrusible jaws containing prominent nail-like teeth. It is usually between 3 and 4 m (10 and 13 ft) long when mature, though it can grow considerably larger such as one captured in 2000 that is thought to have measured 6 m (20 ft). Goblin sharks are benthopelagic creatures that inhabit upper continental slopes, submarine canyons, and seamounts throughout the world at depths greater than 100 m (330 ft), with adults found deeper than juveniles. Some researchers believe that these sharks could also dive to depths of up to 1,300 m (4,270 ft), for short periods of time.

Various anatomical features of the goblin shark, such as its flabby body and small fins, suggest that it is sluggish in nature. This species hunts for teleost fishes, cephalopods, and crustaceans both near the sea floor and in the middle of the water column. Its long snout is covered with ampullae of Lorenzini that enable it to sense minute electric fields produced by nearby prey, which it can snatch up by rapidly extending its jaws. Small numbers of goblin sharks are unintentionally caught by deepwater fisheries. The International Union for Conservation of Nature (IUCN) has assessed it as Least Concern, despite its rarity, citing its wide distribution and low incidence of capture. (Full article...)

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"Away with the superficial and selfish philanthropy of men; who knows what admirable virtue of fishes may be below low-water-mark, bearing up against a hard destiny, not admired by that fellow-creature who alone can appreciate it! Who hears the fishes when they cry?."

---Henry David Thoreau, from A Week on the Concord and Merrimack Rivers

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Topics

Ichthyology : Fish anatomy, Fish development, Fish diseases, Fish locomotion, Fish migration, Ichthyology terms, Limnology, Marine biology, Meristics, Oceanography, Spawning
Taxa : Chondrichthyes, Osteichthyes, Actinopterygii, Sarcopterygii, Chondrostei, Neopterygii, Holostei, Teleostei, Osteoglossomorpha, Elopomorpha, Clupeomorpha, Ostariophysi, Cyclosquamata, Scopelomorpha, Lampridiomorpha, Polymyxiomorpha, Paracanthopterygii, Acanthopterygii
Fishery : Angling, Aquaculture, Fishing, Fish as food, Fish farming, Fish market, Fisheries management, Fishing industry, Overfishing
Food fish : Anchovy, Barb, Basa fish, Bass, Carp, Catfish, Cod, Eel, Flatfish, Goby, Gourami, Haddock, Herring, Mackerel, Oily fish, Perch, Pollock, Salmon, Snapper, Snakehead, Sturgeon, Tilapia, Trout, Tuna, Whitefish
Fishkeeping : Aeration, Aquarium, Fish food, Marine aquarium, Reef aquarium, Brackish water aquarium
Ornamental fish : Angelfish(freshwater), Angelfish(marine), Barb, Blenny, Boxfish, Butterflyfish, Cichlid, Chromis, Clownfish, Corydoras, Damsel, Danio, Discus, Goby, Goldfish, Gourami, Koi, Lionfish[disambiguation needed], Live-bearer, Loach, Mbuna, Rainbowfish, Pufferfish, Rasbora, Seahorse, Siamese fighting fish, Suckermouth catfish, Tang, Tetra, Triggerfish, Wrasse
Others : Amphibious fish, Electric fish, Deep sea fish, Ichthys, Mermaid, Prehistoric fish, Ray, Shark, Walking fish

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  • Expand: Barb (fish species), fishing industry, Greater Argentine, Gold Spot Pleco, Fish anatomy, Black goby, Poecilia caucana, Arrowtooth flounder, Paiute cutthroat trout, Serrasalmus, Pygocentrus, Greater pipefish, Lesser pipefish
  • Develop featured article: Ocean sunfish is in danger of losing its featured article status - improvement urgently needed.
  • Peer review: Spring cavefish, Convict cichlid, Hoplosternum littorale, Shortnose sturgeon
  • Article requests: Missing topics about Fish, Devonian Fish Project article requests, Jörg Freyhof
  • Picture request: Phreatobius cisternarum, Scoloplax, Nematogenys inermis, Chiapas catfish (Upload any non-copyrighted fish images to the appropriate section of Wikimedia Commons)
  • Identify images: Identify and move the images to the appropriate section of Wikimedia Commons
  • Collaboration: Pacific jack mackerel (edit | talk | history | protect | delete | links | watch | logs | views)
  • Assessment: Assess the quality and importance of fish articles
  • Other: Expand Fish anatomy and Fish locomotion, Create articles for the two missing families in the Perciformes (Bembropidae and Zanclorhynchidae). Merge GLAM/ARKive donated texts into articles about endangered species.
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    Related portals

    The Fish Portal: Mini Edition

    The Mini Edition of the Fish Portal is available for you to use on your wikipedia user page or talk page. It uses minimum space but retains many crucial features of the portal. To use it, place ((Portal:Fish/Mini portal)) on the designated page. See here for an example of the mini portal on a user page.

    The Fish Quiz

    The Fish Quiz is a friendly quiz competition designed to test your general knowledge of fish. The current game is Fish Quiz Tournament X. You can read more and join the game here.

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