Fish vary greatly in size. The whale shark and basking shark exceed all other fish by a considerable margin in weight and length. Fish are a paraphyletic group that describes aquatic vertebrates while excluding tetrapods, and the bony fish that often represent the group are more closely related to cetaceans such as whales, than to the cartilaginous fish such as sharks and rays. [ citation needed ] As such, cross group comparisons on this page only serve a colloquial purpose.
Rank | Name | Binomial name | Taxonomic class | Known maximum mass [tonnes] | Maximum length [m (ft)] | Images | Size comparison to human |
---|---|---|---|---|---|---|---|
1 | Whale shark | Rhincodon typus | Chondrichthyes (Cartilaginous fish) | 21.5 [1] | 18.8 metres (61.7 ft) [2] | ||
2 | Basking shark | Cetorhinus maximus | Chondrichthyes (Cartilaginous fish) | 5.2 (16 unconfirmed) [1] | 14 metres (46 ft) [1] [3] [4] | ||
3 | Great white shark | Carcharodon carcharias | Chondrichthyes (Cartilaginous fish) | 3.324 [5] | 7 metres (23 ft) [6] | ||
4 | Tiger shark | Galeocerdo cuvier | Chondrichthyes (Cartilaginous fish) | 3.11 [7] [8] | 7.5 metres (25 ft) [9] | ||
5 | Giant oceanic manta ray | Mobula birostris | Chondrichthyes (Cartilaginous fish) | 3.0 [10] | 5 metres (16 ft) [10] | ||
6 | Giant sunfish | Mola alexandrini | Osteichthyes (Bony fish) | 2.744 [11] | 3.3 metres (11 ft) [12] | ||
7 | Ocean sunfish | Mola mola | Osteichthyes (Bony fish) | 2.3 [1] | 3.1 metres (10 ft) [1] | ||
8 | Beluga sturgeon | Huso huso | Osteichthyes (Bony fish) | 2.072 [13] | 7.2 metres (24 ft) [14] | ||
9 | Sharptail mola | Masturus lanceolatus | Osteichthyes (Bony fish) | 2 [15] | 3.0 metres (9.8 ft) [15] | ||
10 | Hoodwinker sunfish | Mola tecta | Osteichthyes (Bony fish) | 1.87[ citation needed ] | 2.4 metres (7.9 ft)[ citation needed ] | ||
11 | Reef manta ray | Manta alfredi | Chondrichthyes (Cartilaginous fish) | 1.4 [16] | 5.5 metres (18 ft) [16] | ||
12 | Greenland shark | Somniosus microcephalus | Chondrichthyes (Cartilaginous fish) | 1.397 [1] | 7.3 metres (24 ft) [17] | ||
13 | Megamouth shark | Megachasma pelagios | Chondrichthyes (Cartilaginous fish) | 1.215 [18] | 5.2 metres (17 ft) [18] | ||
14 | Kaluga | Huso dauricus | Osteichthyes (Bony fish) | 1.140 [1] | 5.6 metres (18 ft) [1] |
The largest fish of the now-extinct class Placodermi was the giant predatory Dunkleosteus . The largest and most well known species was D. terrelli, which grew almost 9 m (29.5 ft) in length [21] and 4 t (4.4 short tons) [22] in weight. Its filter feeding relative, Titanichthys , may have rivaled it in size. [23] Titanichthys reached a length of 7 m (23 ft) [24] [25] though in older paper it was estimated at 7.5 m (25 ft). [26]
The cartilaginous fish are not directly related to the "bony fish," but are sometimes lumped together for simplicity in description. The largest living cartilaginous fish, of the order Orectolobiformes, is the whale shark (Rhincodon typus), of the world's tropical oceans. It is also the largest living animal that is not a cetacean and, like the largest whales, it is a docile creature that filter-feeds on tiny plankton. An average adult of this species measures 9.7 m (32 ft) long and weighs an average of 9 tonnes. The largest verified specimen was caught in 1949 off Karachi, Pakistan and was 12.7 m (42 ft) long and weighed 21.5 tonnes (21.2 long tons; 23.7 short tons). Although many are dubious, there are several reports of larger whale sharks, with reliable sources citing unverified specimens of up to 37 tonnes (36 long tons; 41 short tons) and 17 m (56 ft). [1] [27]
The largest of the now-extinct Acanthodii was Xylacanthus grandis , an ischnacanthiform based on a ~35 cm (14 in) long jaw bone. Based on the proportions of its relative Ischnacanthus , X. grandis had an estimated total length of 2.5 m (8 ft 2 in). [69]
The largest living bony fish (superclass Osteichthyes, which includes both ray-finned and lobe-finned fish) are the lesser known southern sunfish (Mola alexandrini) followed by widely distributed and better known ocean sunfish (Mola mola) and, both being members of the order Tetraodontiformes. The largest verified specimen belongs to the southern sunfish discovered dead near the Azores in the Atlantic has set the record for being the largest extant bony fish with the weight of 2,744 kg (6,049 lb). The record size ocean sunfish crashed into a boat off Bird Island, Australia in 1910 and measured 4.3 m (14 ft) from fin-to-fin, 3.1 m (10 ft) in length and weighed about 2,300 kg (5,100 lb), [1] while the other record for the biggest bony fish is yet held by a Mola alexandrini which was also coincidentally 2,300 kg (5,100 lb) in mass and 3 m (9.8 ft) in length, caught off in 1996 and misidentified as a Mola mola.
As for length, the longest extant bony fish on earth is the giant oarfish (Regalecus glesne). Slender and compressed, it averages over 6 m (20 ft) long at maturity. A specimen caught in 1885 of 7.6 m (25 ft) in length weighed 275 kg (606 lb). The longest known example, which was hit by a steamship, was measured as 13.7 m (45 ft) long. [1]
Much larger bony fish existed prehistorically, the largest ever known having been Leedsichthys of the Jurassic period. This species is certainly the largest bony fish ever and perhaps the largest non-cetacean marine animal to have ever existed. Estimates of the size of this fish range from 21 to 27 m (69 to 89 ft) and mass from 20 to 50 tons. A maximum size of 22 m (72 ft) and 25–30 tons has been deemed to be most realistic. [70]
The largest living (non-tetrapod) lobe-finned fish is the coelacanth. The average weight of the living West Indian Ocean coelacanth, (Latimeria chalumnae), is 80 kg (180 lb), and they can reach up to 2 m (6.6 ft) in length. Specimens can weigh up to 110 kg (240 lb). The largest lobe-finned fish of all time was Rhizodus at up to 7 m (23 ft). [145]
Pollock or pollack is the common name used for either of the two species of North Atlantic marine fish in the genus Pollachius. Pollachius pollachius is referred to as "pollock" in North America, Ireland and the United Kingdom, while Pollachius virens is usually known as saithe or coley in Great Britain and Ireland. Other names for P. pollachius include the Atlantic pollock, European pollock, lieu jaune, and lythe or lithe; while P. virens is also known as Boston blue, silver bill, or saithe.
Herring are various species of forage fish, mostly belonging to the family of Clupeidae.
The tropical gar is a species of fish from Central America, where it is found in the Pacific and Atlantic drainages from southern Mexico to Costa Rica. In Central America it is known as gaspar and in Mexico it is known as pejelagarto, a contraction of the words "pez" (fish) and "lagarto" (alligator). This gar inhabits a wide range of fresh and brackish water habitats such as rivers, floodplains, lakes and pools, but avoids areas with a strong current. It reaches lengths of up to 1.25 m (4 ft) and a weight up to 2.9 kg (6.4 lb). The tropical gar looks very similar to the longnose gar in color and markings, but can be distinguished by its shorter, broader snout. The tropical gar's diet consists mainly of cichlids and other fish.
The spotted moray is a medium to large moray eel. Other common names include conger, spotted eel, red moray, speckled moray, white cong, white jawed moray, white-chinned moray and white-jawed moray eel. Spotted eels have a long snake-like body, white or pale yellow in general with small overlapping reddish brown to dark-brown spots. They are commonly 60 cm (24 in) in length and can grow up to 2 m (6.6 ft), weighing 2.51 kg (5.5 lb). They inhabit the Western Atlantic Ocean from North Carolina and Bermuda to Brazil, including the Gulf of Mexico and the Caribbean. They are also found around the Mid- and Eastern Atlantic islands as far south as St Helena. They are typically found anywhere from the surface to a depth of 200 m (660 ft).
The skilfish is a species of ray-finned fish, one of two species belonging to the family Anoplopomatidae and the only species in the genus Erilepis. It is also known as black cod, though they have no relation to cod, family Gadidae, and sable fish or sablefish, which is a name commonly used for other species in the family Anoplopomatidae. Found on deep rocky bottoms in the North Pacific at depths of up to 440 metres, they can reach up to 1.83 metres in length and weigh up to 91 kilograms. Young fish display striking white blotches on their body, however their colour changes to dark grey with maturity, and the bright markings become duller and less visible as they grow, similar to the Tiger shark's stripes.
Demersal fish, also known as groundfish, live and feed on or near the bottom of seas or lakes. They occupy the sea floors and lake beds, which usually consist of mud, sand, gravel or rocks. In coastal waters, they are found on or near the continental shelf, and in deep waters, they are found on or near the continental slope or along the continental rise. They are not generally found in the deepest waters, such as abyssal depths or on the abyssal plain, but they can be found around seamounts and islands. The word demersal comes from the Latin demergere, which means to sink.
Snipe eels are a family, Nemichthyidae, of eels that consists of nine species in three genera. They are pelagic fishes, found in every ocean, mostly at depths of 300–600 m (980–1,970 ft) but sometimes as deep as 4,000 m (13,000 ft). Depending on the species, adults may reach 1–2 m (39–79 in) in length, yet they weigh only 80–400 g (2.8–14.1 oz). They are distinguished by their very slender jaws that separate toward the tips as the upper jaw curves upward. The jaws appear similar to the beak of the bird called the snipe. Snipe eels are oviparous, and the juveniles, called Leptocephali, do not resemble the adults but have oval, leaf-shaped and transparent bodies. Different species of snipe eel have different shapes, sizes and colors. The similarly named bobtail snipe eel is actually in a different family and represented by two species, the black Cyema atrum and the bright red Neocyema erythrosoma.
The giant barb, Siamese Giant carp, or simply Siamese carp is the largest species of cyprinid in the world. These migratory fish are found only in the Mae Klong, Mekong, and Chao Phraya River basins in Indochina. Populations have declined drastically due to habitat loss and overfishing, and the giant barb is now considered critically endangered.
Osphronemus is a genus of large gouramis, the only genus within the subfamily Osphroneminae. These fish are known as the giant gouramis and are native to rivers, lakes, pools, swamps and floodplains in Southeast Asia, with O. exodon from the Mekong basin, O. laticlavius and O. septemfasciatus from Borneo, while O. goramy is relatively widespread. O. goramy has been introduced outside its native range in Asia, Africa and Australia.
The Jau catfish or Gilded Catfish is a South American catfish of the family Pimelodidae. It is also known as manguruyu or black manguruyu.
The wolf eel is a species of marine ray-finned fish belonging to the family Anarhichadidae, the wolf fishes. It is found in the North Pacific Ocean. Despite its common name and resemblance, it is not a true eel. It is the only species in the monotypic genus Anarrhichthys.
Myxocyprinus is a monotypic genus of freshwater fish in the monotypic subfamily Myxocyprininae within the family Catostomidae. The only species is Myxocyprinus asiaticus, also known as the Chinese sucker.
Clarias gariepinus or African sharptooth catfish is a species of catfish of the family Clariidae, the airbreathing catfishes.
The common pike conger or pike eel is a species of eel found throughout most of the Indo-Pacific. In Australia, it is known in the southwest, in Western Australia, around the tropical north of the country, and south to the coast of New South Wales. The common pike conger grows up to 2 m in length and 7.1 kg (16 lb) in weight. A nocturnal predator, the common pike conger lives in estuaries and near the shore to a depth of 100 m (330 ft). A strong and muscular fish, the common pike conger is a delicacy in South East Asia and features in various dishes.
Glaucosoma hebraicum, the West Australian dhufish, Westralian jewfish, or West Australian pearl perch, is a species of fish in the family Glaucosomatidae, the pearl perches. It is endemic to the waters around Western Australia from Shark Bay, Western Australia, to the Archipelago of the Recherche at depths to 200 m (660 ft), though typically they occur at depths of 20–50 m (66–164 ft). This species is important to local commercial fisheries and is also popular as a game fish.
Eels are ray-finned fish belonging to the order Anguilliformes, which consists of eight suborders, 20 families, 164 genera, and about 1000 species. Eels undergo considerable development from the early larval stage to the eventual adult stage and are usually predators.
The black sharkminnow, also known as the black shark or black labeo, is a species of freshwater fish in the carp family. It is found in the Mekong and Chao Phraya river basins, Malay Peninsula, Sumatra, Java and Borneo. It can reach a length of 90 cm (3 ft) and a weight of 7 kg (15 lb). It is sometimes seen in the aquarium trade, but is generally unsuitable for home aquaria due to its large adult size and territorial, aggressive behavior.
The garden eels are the subfamily Heterocongrinae in the conger eel family Congridae. The majority of the 36 known species of garden eels live in the Indo-Pacific, but can be found in warm ocean water worldwide. These small eels live in burrows on the sea floor and get their name from the behavior of poking their heads from their burrows while most of their bodies remain hidden. Since they tend to live in groups, the many eel heads "growing" from the sea floor resemble the plants in a garden. They vary in color and size depending on the species. The largest species reaches about 120 cm (47 in) in length, but most species do not surpass 60 cm (24 in). Garden eel colonies can grow as large as one acre in surface area and number up to several thousand individuals.
Sargocentron spiniferum, common name sabre squirrelfish, giant squirrelfish and spiny squirrelfish, is a large Indo-Pacific species of squirrelfish belonging to the family Holocentridae.
Silurus biwaensis, the giant Lake Biwa catfish, is a large predatory catfish species endemic to Lake Biwa in Japan.
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