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Fish

A fish is a poikilothermic (cold-blooded) water-dwelling vertebrate with gills. There are over 27,000 species of fish, making them the most diverse group of vertebrates. Taxonomically, fish are a paraphyletic group whose exact relationships are much debated; a common division is into the jawless fish (class Agnatha, 75 species including lampreys and hagfish), the cartilaginous fish (class Chondrichthyes, 800 species including sharks and rays), with the remainder classed as bony fish (class Osteichthyes). more...

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Fish come in different sizes, from the 14m (45 ft) whale shark to a 7 mm (just over 1/4 of an inch) long stout infantfish. Many types of aquatic animals named "fish", such as jellyfish and cuttlefish, are not true fish. Other sea dwelling creatures, like dolphins, are actually mammals.

Certain species of fish maintain elevated body temperatures to varying degrees. Endothermic teleosts (bony fishes) are all in the suborder Scombroidei and include the billfishes, tunas, and one species of "primitive" mackerel (Gasterochisma melampus). All sharks in the family Lamnidae – shortfin mako, long fin mako, white, porbeagle, and salmon shark – are known to have the capacity for endothermy, and evidence suggests the trait exists in family Alopiidae (thresher sharks). The degree of endothermy varies from the billfish, which warm only their eyes and brain, to bluefin tuna and porbeagle sharks who maintain body temperatures elevated in excess of 20 °C above ambient water temperatures. See also gigantothermy. Endothermy, though metabolically costly, is thought to provide advantages such as increased contractile force of muscles, higher rates of central nervous system processing, and higher rates of digestion.

Fish ecology

Fish can be found in almost all large bodies of water in salt or brackish or fresh water, at depths from just below the surface to several thousand meters. However, hyper-saline lakes like the Great Salt Lake do not support fishes. Some species of fish have been specially bred to be kept and displayed in an aquarium, and can survive in the home environment.

Catching fish for the purpose of food or sport is known as fishing. The annual yield from all fisheries worldwide is about 100 million tonnes. Overfishing is a threat to many species of fish. On May 15, 2003, the journal Nature reported that all large oceanic fish species worldwide had been so systematically over caught that fewer than 10% of 1950 levels remained. Particularly imperiled were sharks, Atlantic cod, Bluefin tuna, and Pacific sardines. The authors recommended immediate drastic cutbacks in fish catches and reservation of ocean habitats worldwide.

Note on usage: "fish" vs. "fishes"

"Fishes" is the proper English plural form of "fish" that biologists use when speaking about two or more fish species, as in "There are over 25,000 fishes in the world" (meaning that there are over 25,000 fish species in the world). When speaking of two or more individual fish organisms, then the word "fish" is used, as in "There are several million fish of the species Gadus morhua" (meaning that G. morhua comprises several million individuals). To see both in action, consider the statement "There are twelve fish in this aquarium, representing five fishes" (meaning that the aquarium contains twelve individuals, some of the same species and some of different species, for a total of five species). The usage of the two words is similar to that of the words "people" and "peoples".

Fish as food

Fishes are an important source of food in many cultures. Other water-dwelling animals such as mollusks, crustaceans, and shellfish are often called "fish" when used as food. For more details, see Fish (food).

Read more at Wikipedia.org


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royann baumroyann baum $62.00 Magellan Mag Wick Caped & Vented Fishing Shirt Size MMagellan Mag Wick Caped & Vented Fishing Shirt Size M $5.00
New Fishing Bait Trap Crab Net Crawdad Shrimp Cast Dip Cage Fish Minnow FoldableNew Fishing Bait Trap Crab Net Crawdad Shrimp Cast Dip Cage Fish Minnow Foldable $6.71 Bomber Bait Co, Tx.,"Mod. 7A", Firetiger Pattern, Org. Belly, Red Lip New HtfBomber Bait Co, Tx.,"Mod. 7A", Firetiger Pattern, Org. Belly, Red Lip New Htf $5.68
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5 - Powered By Favorite Ap Bassin's 2 Pc Fishing Rod Sleeves -New Not In Package5 - Powered By Favorite Ap Bassin's 2 Pc Fishing Rod Sleeves -New Not In Package $4.99 Quantum Q6 40 Fishing Reel By ZebcoQuantum Q6 40 Fishing Reel By Zebco $15.00
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(1)Vintage Mann's Baby 1-Minus, 2-1/8in.,Crankbait,Fishin g Lures,Old Tackle,Box(1)Vintage Mann's Baby 1-Minus, 2-1/8in.,Crankbait,Fishin g Lures,Old Tackle,Box $9.99 Vintage Antique Fishing Pouch For Hooks And Line Very Old. A kippy kit.Vintage Antique Fishing Pouch For Hooks And Line Very Old. A kippy kit. $35.00
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Penn # 85 Fishing ReelPenn # 85 Fishing Reel $14.00 Sixgill Banshee 2000Sixgill Banshee 2000 $40.00
Vintage Beau Sterling Silver Fish Blue Orange Cloisonne Pin Brooch 6.8 Gr -1.25"Vintage Beau Sterling Silver Fish Blue Orange Cloisonne Pin Brooch 6.8 Gr -1.25" $19.88 Xps Lazer Eye Fishing LureXps Lazer Eye Fishing Lure $10.00
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Multi-Color Led Light Aquarium Full Spectrum 129 Led For 30"-41" Fish TankMulti-Color Led Light Aquarium Full Spectrum 129 Led For 30"-41" Fish Tank $39.99 Tru-Tungsten Watermelon Seed 8ct Reversed Dart Soft PlasticTru-Tungsten Watermelon Seed 8ct Reversed Dart Soft Plastic $2.99
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Swarovski Crystal Telescope Fish # 7644 Mint In Box W cylinder mirrorSwarovski Crystal Telescope Fish # 7644 Mint In Box W cylinder mirror $85.00 Vintage Penn Fishing Reel No 78Vintage Penn Fishing Reel No 78 $14.00
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Fred Arbogast 1930’s vintage lureFred Arbogast 1930’s vintage lure $10.00 Kikkerland Stainless Steel Fish Magic Soap - Odor RemoverKikkerland Stainless Steel Fish Magic Soap - Odor Remover $8.90
Disney Finding Nemo Fish In A Bag Starfish Hidden Mickey Cast Lanyard PinDisney Finding Nemo Fish In A Bag Starfish Hidden Mickey Cast Lanyard Pin $2.99 New Grilling Tray. Porcelain-Coated Vegetable / Shrimp / Fish Grilling TrayNew Grilling Tray. Porcelain-Coated Vegetable / Shrimp / Fish Grilling Tray $1.99
Shakespeare Model 1810 Ii Vintage Fishing Reel Super Cool ReelShakespeare Model 1810 Ii Vintage Fishing Reel Super Cool Reel $29.99 Vintage Chinese Blue And Gray Ming Footed Pedestal Plates Cake Server, FishVintage Chinese Blue And Gray Ming Footed Pedestal Plates Cake Server, Fish $17.90
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The Survival Handbook by Dk BookThe Survival Handbook by Dk Book $6.25 huk performance fishing shirthuk performance fishing shirt $9.99
Aftco Top Standard Swivel Sst112 Black/Silver Brand NewAftco Top Standard Swivel Sst112 Black/Silver Brand New $40.00 Car Truck Suv Chrome Emblem Jesus Christian Fish Symbol Ichthys 3D Decal BadgeCar Truck Suv Chrome Emblem Jesus Christian Fish Symbol Ichthys 3D Decal Badge $70.00
1930 State of Missouri Hunting & Fishing License1930 State of Missouri Hunting & Fishing License $20.00 Bulk Slider Heads Charlie Brewer Pro Series 1/4ozBulk Slider Heads Charlie Brewer Pro Series 1/4oz $14.99
Vintage Heddon Prowler Fishing Lure Rare Gold Scale White Belly Nice!Vintage Heddon Prowler Fishing Lure Rare Gold Scale White Belly Nice! $12.99 5 - Powered By Favorite Lunker's 2 Pc Fishing Rod Sleeves -New Not In Package5 - Powered By Favorite Lunker's 2 Pc Fishing Rod Sleeves -New Not In Package $4.99
KastKing Fishing Tackle Bags Storage Bag For Freshwater Rip Stop Nylon-LargeKastKing Fishing Tackle Bags Storage Bag For Freshwater Rip Stop Nylon-Large $85.98 Vintage Bomber CrankbaitVintage Bomber Crankbait $5.00
N Scale Wilderness Weathered Fish'n CabinN Scale Wilderness Weathered Fish'n Cabin $14.99 Handmade Fishing Lures, Salmon lures, High Quality, Spinners, bright colors Handmade Fishing Lures, Salmon lures, High Quality, Spinners, bright colors  $15.30
48 Cabela's Model 4007Cab Tackle Box Inserts48 Cabela's Model 4007Cab Tackle Box Inserts $10.00 Berkley 4-Pack Fusion19 Swimbait 3/0 Fishing Hook #1365486Berkley 4-Pack Fusion19 Swimbait 3/0 Fishing Hook #1365486 $4.99
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Vintage Floating Fish Knife, Wood Handle, Stainless Steel Blade, JapanVintage Floating Fish Knife, Wood Handle, Stainless Steel Blade, Japan $10.00 The North Face Flashdry Tagless Shirt-Ss-M-Hiking-Camping -Backpacking-FishingThe North Face Flashdry Tagless Shirt-Ss-M-Hiking-Camping -Backpacking-Fishing $13.75
Vintage Sealake 930 Bait Casting ReelVintage Sealake 930 Bait Casting Reel $25.00 Vietnam 1980 Sc=1070 - 1077 Used FishVietnam 1980 Sc=1070 - 1077 Used Fish $1.50
vintage fishing reelsvintage fishing reels $25.00 Western Earrings, Cactus, Copper/Patina, Fish hookWestern Earrings, Cactus, Copper/Patina, Fish hook $28.00
Vintage Garcia Mitchell 309 Spinning ReelVintage Garcia Mitchell 309 Spinning Reel $30.00 new- Rapala Jointed Fishing Lures Approx 3.25" Bodynew- Rapala Jointed Fishing Lures Approx 3.25" Body $4.75
Vintage Bomber Bait Co. Rip Shad, 2-3/8in.Body,Topwater,Lur es,Old Tackle,Box,BlkVintage Bomber Bait Co. Rip Shad, 2-3/8in.Body,Topwater,Lur es,Old Tackle,Box,Blk $7.99 Riders Denim Blue Shorts Women's Size 10 M Paisley Print Waist Decoration CasualRiders Denim Blue Shorts Women's Size 10 M Paisley Print Waist Decoration Casual $7.90
KastKing Rover 90L Conventional Reel Round Baitcasting Fishing Reel Metal 30 LbKastKing Rover 90L Conventional Reel Round Baitcasting Fishing Reel Metal 30 Lb $70.99 KastKing Royale Legend Gt 7.2:1 Baitcasting Fishing Reel Rubber Knob - LeftKastKing Royale Legend Gt 7.2:1 Baitcasting Fishing Reel Rubber Knob - Left $33.99
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Eagle Claw Fishing Reel Bc10Eagle Claw Fishing Reel Bc10 $29.99 2 Vintage Zebco 600 All Metal Casting Reel - Made In Usa!2 Vintage Zebco 600 All Metal Casting Reel - Made In Usa! $19.99
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Spiderwire Ultracast Floro-Braid. 300yard. 100lbSpiderwire Ultracast Floro-Braid. 300yard. 100lb $24.99 Tommy Bahama Live Bait canvas slip on oyster tan fishing boat deck shoe 10Tommy Bahama Live Bait canvas slip on oyster tan fishing boat deck shoe 10 $11.00
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KastKing Baitfeeder Iii 3000 5.1:1 Saltwater Spinning Fishing Reels + Free SpoolKastKing Baitfeeder Iii 3000 5.1:1 Saltwater Spinning Fishing Reels + Free Spool $47.99 Wooden Yellow Bird Christmas Ornament 3”Wooden Yellow Bird Christmas Ornament 3” $19.00
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Prices current as of last update, 06/15/21 10:35pm.

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