कसैले कल्पना सम्म गर्न नसक्ने आकारको माछा फेला.मान्छेभन्दा पनि ठुलो आकारको माछा यस्तो छ(भिडियो)

The largest living bony fish (superclass Osteichthyes, which includes both ray-finned and lobe-finned fish) is the widely distributed ocean sunfish (Mola mola), a member of the order Tetraodontiformes. The record size 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).[5]

The extremely rare king of herrings or oarfish, the longest of all bony fish.

As to length, the longest extant bony fish on earth is the king of herrings or oarfish (Regalecus glesne). Slender and compressed, this fish 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 king of herrings, which was hit by a steamship, was measured as 13.7 m (45 ft) long, but unverified specimens have been reported up to 16.7 m (55 ft).[5]

Much larger bony fish existed prehistorically, the largest ever known having been Leedsichthys, of the Jurassic period in what is now England. 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.[6]

The remains of a 1000 kg beluga sturgeon, one of the largest bony fish
Sturgeons (Acipenseriformes)The largest species is the beluga sturgeon (Huso huso) of the Caspian and Black seas, the only extant bony fish to rival the massiveness of the ocean sunfish. The largest specimen considered reliable (based on remains) was caught in Volga estuary in 1827 and measured 7.3 m (24 ft) and weighed 1,474 kg (3,250 lb).[5] The slightly smaller kaluga (Huso dauricus) or great Siberian sturgeon has been weighed reliably up to 1,140 kg (2,510 lb) (Berg, 1932) and a length of 5.6 m (18 ft).[5][7] The North American white sturgeon (Acipenser transmontanus), unverified to 907 kg (2,000 lb) and 6.1 m (20 ft), Chinese, European Oceanic, and the Russian sturgeon (A. gueldenstaedtii), at as much as 1,000 kg (2,200 lb) and 5.5 m (18 ft) for a 75-year-old female, also can attain great sizes.[5] Atlantics and Baikal sturgeons are following as well. These fish are sometimes called the largest freshwater fish but sturgeons spend a great deal of time in brackish water and switch back and forth between saltwater and freshwater environments in their life cycle. Also included in this order are the paddlefish and the Chinese Paddlefish (Psephurus gladius), which may now be extinct and is at least critically endangered, is also a very large fish. Reportedly, fisherman as recently as the 1950s have caught paddlefish measuring up to 6.7 m (22 ft) in total length, although no specimen greater than 3.1 m (10 ft) has been scientifically measured. The weight of the Chinese Paddlefish is reportedly 300 to 500 kg (660 to 1,100 lb).[8][9]
Bonefishes (Albuliformes)The largest bonefishes are the Bonefish (Albula vulpes) weighs up to 19 lb (8.6 kg) and measures up to 90 cm (35 in) long. It is silvery in color with dusky fins. The bases of the pectoral fins are yellow.

The head of a European conger, the world's most massive eel
Bowfins (Amiiformes)The largest species bowfins Bowfin (Amia calva) The most distinctive characteristic of the bowfin is its very long dorsal fin consisting of 145 to 250 rays, and running from mid-back to the base of the tail. The caudal fin is a single lobe, though heterocercal.[10] They can grow up to 109 centimetres (43 in) in length, and weigh 9.75 kilograms (21.5 lb).[11]
Eels (Anguilliformes)The largest species of "true eel," if measured in weight and overall bulk, is the European conger (Conger conger). The maximum size of this species has been reported to 3 m (9.8 ft) and a mass of 110 kg (240 lb).[12]Several moray eels can equal or exceed the previous eel in length but do not weigh as much. The longest fish in the order, at up to 4 m (13 ft), is the slender giant moray (Strophidon sathete) of the Indo-Pacific oceans.[13]
Silversides (Atheriniformes)An order best known for its tiny representatives, the largest species is the jacksmelt (Atherinopsis californiensis) of the Pacific Ocean. Although it reaches 45 cm (18 in), it is not known to even reach 450 g (0.99 lb).[14]
Barreleyes and slickheads (Argentiniformes)The largest barreleyes are javelin spookfish (Bathylychnops exilis)found in the northern Pacific and in the eastern Atlantic Ocean near the Azores where it is found at depths of around 640 metres (2,100 ft). This species grows to a length of 50 centimetres (20 in) SL.[15]
Jellynose fishes (Ateleopodiformes)The largest jellynose fishes is Ateleopus japonicus is an exception, retaining several fins as adults and having ventral fins that are located behind (not below) the pectoral fins. Dorsal fins tend to be high, with a rather short base (9-13 rays, but in some as few as three); they are placed just behind the head. They have seven branchiostegal rays. The species have a range of sizes, the longest reaching 2 m (6.6 ft).[citation needed]
Grinners (Aulopiformes)The largest member of this order is the lancetfish (Alepisaurus ferox), found in all the world's oceans. Slender, with a huge spine, these fish can reach 2.1 m (6.9 ft) long and can weigh up to 11 kg (24 lb).[16]
Toadfish (Batrachoidiformes)

The largest toadfish, the Pacuma toadfish.The largest toadfish is the Pacuma toadfish (Batrachoides surinamensis), reaching a size of up to 5 pounds (2.3 kg) and 23 inches (58 cm).[17]
Flying-fish and allies (Beloniformes)The largest member of this order, best known for its members' ability to breach the water and zip through the sky, is the pelagic Houndfish (Tylosurus crocodilus), a slender fish at up to 1.5 m (4.9 ft) and a weight of 6.35 kg (14.0 lb).[18] The largest true "flying fish" is the Japanese flying fish (Cheilopogon pinnatibarbatus japonicus), which can range up to 0.5 m (1.6 ft) in length and weigh over 1 kg (2.2 lb).[9]
Squirrelfish (Beryciformes)Best known for their highly poisonous barbs, the squirrelfish's largest representative is the giant squirrelfish (Sargocentron spiniferum) of the Indo-Pacific, at up to 51 cm (20 in) and 2.6 kg (5.7 lb).[19] The slimmer Holocentrus adscensionis from warm parts of the Atlantic can reach even greater lengths of up to 61 cm (24 in).[20]
Whalefish (Cetomimiformes)Known for flesh that fells flabby to the touch, this order reaches largest sizes in the flabby whalefish (Gyrinomimus grahami) of all southern oceans. This species, which can range up to 0.45 m (1.5 ft) in length and weigh 1.5 kg (3.3 lb), is sometimes commercially fished.[9][21]
Characins (Characiformes)The largest species is the African freshwater fish, the giant tigerfish (Hydrocynus goliath). The top size of this fish is 1.5 m (4.9 ft) and 50 kg (110 lb).[22][23] Among the largest of the characin family is the popular sport-fish, the golden dorado (Salminus brasiliensis), which can reach up to 1 m (3.3 ft) in length and weigh 31.4 kg (69 lb).[24] Among the characins are the infamous neotropical piranhas. Carnivorous species can grow up to 0.43 m (1.4 ft), although the Tambaqui (Colossoma macropomum), at up to 1 m (3.3 ft) and 32.4 kg (71 lb), is often considered a giant, herbivorous form of piranha.[9]
Herring (Clupeiformes)The largest herring is probably the Dorab wolf herring (Chirocentrus dorab) of the Indo-Pacific oceans. The maximum size of this species has been reported as much as 1.8 m (5.9 ft), but these slender fish have never been recorded as exceeding 3.4 kg (7.5 lb) in weight.[9] The so-called "king of herrings" is not a herring, but an oarfish.
Minnows and allies (Cypriniformes)The minnow family (which includes carp), Cyprinidae, is the largest family of vertebrates, with over 2400 species known today.[25] The largest species is probably the giant barb (Catlocarpio siamensis), which is endemic to three river basins in central Asia and reaches a size of as much as 3 m (9.8 ft) and a weight of as much as 300 kg (660 lb).[26] In centuries past, the Mahseer (Barbus tor) of Southern Asia was reported to reach similar or even larger proportions, but these are dubious since specimens nearly as large as the giant barb have never been reported in recent centuries.[9]
Pikes and allies (Esociformes)The largest species in this small but interesting order (formerly allied with the salmonids) is the muskellunge (Esox masquinongy) of the rivers of North America. These predatory fish can grow up to 1.8 m (5.9 ft) and 45.4 kg (100 lb).[27][28]
Killifish and allies (Cyprinodontiformes)The largest species in this relatively small-bodied order is the Pacific four-eyed fish (Anableps dowei), reaching a size of 34 cm (13 in) and 588 g (1.296 lb).[29]
Ladyfishes and allies (Elopiformes)This small order is usually considered closely related to the true eels although its members are very different in appearance and behavior from eels. The largest species is much-coveted-sport fish, the Atlantic tarpon (Megalops atlanticus). The maximum recorded size for this species is 161 kg (355 lb) and length is up to 2.5 m (8.2 ft).[