Chainsaw sharks, also called carpenter sharks, are family members of rays determined by long, slender, flat rostrum, or nasal expansion, coated with sharp transverse teeth, arranged so that they look like saws. They are one of the largest fish with several varieties measuring around 7 – 7.6 m (23 – 25 feet). They are found all over the world in subtropical and exotic areas in coastal waters and also in the waters of brackish estuaries, beside freshwater rivers and lakes.
Chainsaw shark should not be confused with saw sharks (order Pristiophoriformes) or vanishing sclerorhynchids (order Sclerorhynchiformes) that have a comparable appearance, or swordfish (household Xiphiidae) which have similar names but vary in appearance.
Sharks are slow-moving breeders and females give birth to young lives. They eat fish and also invertebrates that are seen and caught using their saws. They are usually safe for humans, but can cause significant injury when recorded and defend themselves with a saw.
Chainsaw Shark has been recognized and sought for hundreds of years, and plays important mythical and spiritual functions in many societies around the world.
As usual, sawfish have really experienced a radical decline in recent years, and are the only fortresses in North Australia and Florida, United States. They are hunted for their fins (shark fin soup), the use of components as conventional medicine, their teeth and saws. This shark protected in Australia, the United States and a number of other countries, which means that sharks caught by accident must be launched and violations can be punished with significant fines.
- History of Chainsaw Sharks
- Taxonomy and Etymology
- Extinct (fossil) Chainsaw Shark Varieties
- Looks and Anatomy of the Chainsaw Shark
- Chainsaw Shark Body Parts
- Dimensions / Size of the Chainsaw Shark
- Distribution (Some Touchable Areas)
- Habitat | Chainsaw Shark House and Environment
- Environmental Damage and the Extinction of Chainsaw Sharks
History of Chainsaw Sharks
Writer shows whales and a number of fish, consisting of Chainsaw sharks, in China (Johan Nieuhof: Het gezantschap der Neêrlandtsche Oost-Indische Compagnie, 1665).
Larger Chainsaw sharks (originally Squalus pristis, currently Pristis pristis) are among the types described by Carl Linnaeus in Systema Naturae in 1758, the initial factor of contemporary zoological nomenclature, but the swordfish was understood several years before.
Chainsaw shark was sometimes stated in ancient times during 1800 – 2400 years earlier, in works such as Pliny’s Natural History (77-79 ADVERTISEMENT).  Pristis, the scientific name formalized for ornamental fish by Linnaeus in 1758, was also used as a name also before publication.
Sawfish or “priste” was included in the book of marine fishes in the image of the Ornithologiæ expressed by Guillaume Rondelet in 1554, and “prize” included in the book 5 of fish and the pork lib. One by Ulisse Aldrovandi in 1613.  Outside Europe, swordfish expressed in old Persian messages, such as 13th-century writings by Zakariya al-Qazwini.
Sharks have been found among archaeological remains in a number of parts of the world, including the Persian Gulf region, the Pacific coast of Panama, the coast of Brazil and also elsewhere.
Chainsaw Shark di Aztecs Mexico
The social relevance of saw fish varies significantly. Aztecs in the Mexican region today generally consist of representation of rostra saws (saws), especially as the attacker / sword of the Cipactli monster. Various shark rostra have been found hidden in the Mayor of Templo and two areas on the Veracruz coast have Aztec names that describe sharks. In the same general area, sawtooths have been found in Maya tombs.
Chainsaw shak saws are part of the Huave and Zapotec dance masks in Oaxaca, Mexico. Ancient individuals on the Caribbean coast of Panama and Colombia consider sharks as saviors of drowning individuals and also guardians of unsafe marine animals. In Panama Chainsaw is known to have an effective spirit that can protect humans from extraordinary enemies.
Sawfish or “priste” was included in Libri de piscibus marinis in the stupa quibus verae piscium expressae sunt by Guillaume Rondelet in 1554, and “pristi” consisted of De piscibus libri V, and De cetis lib. Aztecs in the Mexican region today usually consist of representation of rostra saws (saws), which are significantly as Cipactli monsters. Various shark rostra have actually been hidden in the Mayor of Templo and 2 locations on the Veracruz coast have Aztec names that refer to Chainsaw. In the same basic area, sawtooths have actually been found in Maya graves. The shark saw is a component of the Huave and Zapotec dance masks in Oaxaca, Mexico.
Taxonomy and Etymology
The scientific names of the Pristidae shark family and its genus Pristis come from Ancient Greek: πρίστης, romanized: prístēs, lit. ‘see, see’.
Regardless of their appearance, the Chainsaw shark is a ray (Batoidea superorder). The seafood household has traditionally been considered the only surviving member of the order Pristiformes, but recently authorities have included it in the Rhinopristiformes, an order that now comprises the family of fish, along with households including fish, wedgefish, banjo rays and Likes. sawdust is a bit like salmon, except that the last group has no saws, and their common ancestors tend to resemble salads.
Taxonomic level varieties in the Chainsaw shark family have historically caused many complications and are usually described as chaotic. Only in 2013 it was safely established that there were five live varieties in 2 genera.
Anoxypristis has a single type of living thing traditionally included in Pristis, but the 2 genera are morphologically and also genetically very different. Today Pristis contains four vivid and valid varieties which are divided into two teams.
Extinct (fossil) Chainsaw Shark Varieties
The shark that disappeared is generally only known from its rostral teeth, here from the type of Eocene Pristis lathami.
In the enhancement of living Chainsaw sharks, there are many extinct varieties which are only recognized from fossil remains. The oldest known is the monotypic Peyeria genus where remains are around 100 million years old from the Cenomanian (Late Cretaceous) period, although they may stand for rhinid rather than sawfish. Among these are Propristis, a monotype gene that is only understood from fossil remains, as well as a number of extinct Pristis species and many Anoxypristis varieties that have vanished (both genera are also represented by living varieties).
Sclerorhynchidae household that disappeared look like swordfish. They are known only from Cretaceous fossils, and are usually only about 1 m (3.3 ft) in size. Some actually recommend that sharks and sclerorhynchids make clades, Pristiorajea, while others think that groups are not too close, making the recommended polyphyletic clades.
Chainsaw shark households actually have traditionally been thought of as the only living members of the order Pristiformes, but the authorities recently specifically included them in Rhinopristiformes, an order that now includes shark households, as well as households containing fish swordfish, stingrays, stingrays and the like. At present Pristis consists of 4 living and legitimate species which are broken up into two groups of varieties.
Apart from live sharks, there are a number of vanished varieties that are only understood from fossil remains. Among these are Propristis, new categories of monotypes known from fossil remains, as well as a number of extinct Pristis varieties and a number of extinct Anoxypristic varieties (both of these categories are also represented by living varieties).
Looks and Anatomy of the Chainsaw Shark
Sharks are light brown, grayish, yellow or greenish on top, but the color varies and dark people can be almost black. The underside is light, and generally beige
The saw section of the narrow swordfish above and the environmentally friendly ornamental fish are listed below. Note the difference in the shape of the teeth and also the absence / presence of teeth in the rostrum’s basal quarter (each red or black part of the ruler is 10 cm or 3.9 in).
One of the most prominent features of the Chainsaw shark is a saw-like pulpit with rows of whitish teeth (rostral teeth) on both sides. Rostrum is an extension of chondrocranium (“head”), made of cartilage material and also covered with skin. The size of the rostrum is usually around one quarter to one third of the total size of the fish, but varies depending on the type, and sometimes with age and sex.
Rostral teeth are not teeth in the conventional sense, but rather modified dermal denticles. Rostral teeth enlarge in dimensions throughout the life of the chainsaw and also the teeth are not replaced if they are shed of shark. In Pristis these sharks have teeth found throughout the entire size of rostrum, but in adult Anoxypristis there are no teeth in the basic quarter of rostrum (about one sixth in adolescents of Anoxypristis).
The number of teeth varies depending on the species and can range from 14 to 37 on each side of the rostrum. It is common for swordfish to have somewhat different teeth on each side of the rostrum (the difference generally does not exceed three). In some varieties, women usually have fewer teeth than men. Each tooth is like a peg in Pristis sawfish, and also squashed and triangular in Anoxypristis. The combination of functions, consisting of fins and rostrum, is usually used to divide types, but it is possible to do so only with the pulpit.
Chainsaw Shark Body Parts
The whitish base of the Bluetooth sawfish reveals its nostrils (near the base of the saw), the mouth, and also two rows of gill slits (at the base of the two pectoral fins).
Comparison of largetooth (top), environmentally friendly (middle) and lean saw fish (base). Pay particular attention to the framework of the saw fin, the caudal and pectoral fins, and the placement of the first dorsal fin in contrast to the abdominal fin.
The chainsaw shark has a strong shark-like body, a flat head and a flat bottom. The appearance of the skin resembles the rough sandpaper of this saw due to the treatment of facial denticles, but in Anoxypristis most of the skin is smooth. The mouth and nostrils are positioned at the bottom of the head. It has to do with 88 – 128 small, blunt-edged teeth in the upper jaw of the mouth and around 84-176 in the lower jaw (not to be confused with teeth on a saw).
These are arranged in 10 – 12 lines in each jaw, and also somewhat look like a stone path. They have small eyes and also behind each of them are spirits, which are used to draw water through the gills. Gill slits, 5 on each side, are positioned at the bottom of the body near the base of the pectoral fin. Placement of gill openings separates them from as if they were comparable, but usually are much smaller (about 1.5 m or 5 feet long) saws, where the slit is placed on the side of the neck. Unlike swordfish, saws also have a set of long feathers on the stand (“saws”).
Chainsaw Sharks have 2 dorsal fins that are distinctive and also quite tall, pectoral fins and abdominal fins like wings, and a tail with a characteristic upper flank and a lower flank that varies in size (relatively lower bellow on Anoxypristis; small to lack in the Pristis saw) . The position of the initial dorsal fin compared to the abdominal fin is different and is also a feature that helps to separate several varieties. There are no anal fins.
Like other elasmobranchs, saws do not have swimming pockets (instead of controlling buoyancy with an oil-rich heart), have skeletons containing cartilage, and males have clasper, a pair of long skeletons used for breeding and placed at the bottom in fins stomach. Clasper is unclear and also slightly in young men.
Their small intestine includes curly shaped interior dividers, called spiral valves, which increase the surface area available for food absorption. [reference?]
The most distinctive feature of chainsaw shark is rostrum like their saw with rows of whitish teeth (rostral teeth) on both sides. Rostral teeth are not teeth in the traditional sense, but greatly change facial denticles. Rostral teeth enlarge in size over the life of the tooth and also the chainsae is not replaced if lost. In Pristis chainsaw, teeth are located along the length of the rostrum, but in adult Anoxypristis there are no teeth in the rostrum’s basal quarter (about one sixth in juvenile Anoxypristis). There are about 88 – 128 small, blunt-edged teeth in the upper jaw of the mouth as well as about 84-176 in the reduced jaw (not to be confused with teeth in a saw).
Dimensions / Size of the Chainsaw Shark
Smalltooth saws, largetooth sharks and environmentally friendly saws are among the biggest fish in the world. They can actually reach a total length of around 6 m (20 ft) and there are individual reports that are larger than 7 m (23 ft), but this is often labeled with some uncertainty. Old unconfirmed and highly doubtful records of much larger individuals do exist, including those reputedly having a length of 9.14 m (30 ft), an additional weighing 2,400 kg (5,300 lbs), and also the 3rd known record . 9.45 m (31 ft) long and weighs 2,591 kg (5,712 lbs).
The remaining two types, the sawfish and the sawfish, are much smaller, but are still large fish with an optimal overall length of at least 3.2 m (10.5 ft) and 3.5 m (11.5) feet). In the past, it was usually reported that dwarf fish only reached about 1.4 m (4.6 ft), but this is now recognized to be incorrect
Distribution (Some Touchable Areas)
Smalltooth swordfish are the only variety found purely in the Atlantic region and the only surviving in the United States.
Historically they varied in the East Atlantic from Morocco to South Africa, and in the West Atlantic from New York (United States) to Uruguay, which consisted of the Caribbean and also the Gulf of Mexico. There are old records (most recently in the late 1950s or shortly after) from the Mediterranean and these are usually considered drifters,  the document review strongly recommends that this sea has a reproducing population.
In the East Pacific they range from Mazatlan (Mexico) to northern Peru. Although the Gulf of California has sometimes been included in their varieties, the only Mexican Pacific record that is famous for swordfish is from the south of its mouth. They are widespread in the west and also the main Indo-Pacific, from South Africa to the Red Sea and the Persian Gulf, east and north to Korea and southern Japan, through Southeast Asia to Papua New Guinea and Australia. Sharks today have disappeared from much of their history.
Habitat | Chainsaw Shark House and Environment
Chainsaw shark are found mostly in marine waters and estuary brackish waters, but they are euryhaline (can adapt to various salinity) and are also found in fresh water. Larger Bluetooth sawfish, also called freshwater sawfish, has the greatest affinity for freshwater. It has been reported as far as 1,340 km (830 miles) above the Amazon River as well as on Lake Nicaragua, and also its children spend the first years of their lives in fresh water. On the other hand, smalltooth, environmentally friendly and also dwarf sharks are generally clear from pure fresh water, but sometimes it may relocate many rivers, especially during periods when there is an increase in salinity.There are reports of narrow swordfish seen far upstream, but verification of this request can also lead to misidentification of other sawtooth species.
Saw fish are mainly located in fairly shallow waters, generally at depths of less than 10 m (33 ft), and periodically less than 1 m (3.3 ft).  Young people choose places that are very shallow and generally are in water as deep as 25 cm (10 in). saw fish can occur offshore, but not deeper than 100 m (330 ft). An unknown swordfish (either largetooth or smalltooth sawfish) was recorded in Central America at a depth of more than 175 m (575 feet).
Water Temperature Capacity for Chainsaw Shark
Dwarf fish and largetooth sawfish are varieties of pure warm water that normally live in waters that are 25-32 ° C (77-90 ° F) and also 24-32 ° C (75-90 ° F) specifically. Eco-friendly swordfish and small fish also occur in cooler waters, the latter down to 16-18 ° C (61 – 64 ° F), as illustrated by their (initial) distribution which ranges further north and also south. really warm water species.
Saw sharks are generally found much deeper, often at depths of more than 200 m (660 ft), and when shallow, especially in cooler or subtropical waters than saw sharks.
Smalltooth swordfish, Bluetooth bluetooth sawfish and environmentally friendly are the largest fish in the world. Larger bluetooth sawfish, also called freshwater sawfish, have the greatest fondness for freshwater. There are reports of narrow sawfish that look far upstream, but confirmation of this requirement can also involve misidentification of various other sawfish shark varieties.
An unknown swordfish (either largetooth or smalltooth sawfish) was recorded in Central America at a depth of more than 175 m (575 feet).
Small fish and also green sharks also occur in cooler waters, the latter down to 16-18 ° C (61 – 64 ° F), as highlighted by their (native) circulation which varies further north and also south from tight areas. warm water varieties.
Breeding (chainsaw shark conservation)
Relatively little is found about the reproductive behavior of saw fish, but all ovoviviparous species with adult women bring young life every year or every second year. In general, men seem to reach sexual maturity at a slightly younger age and smaller dimensions than women.
As far as is known, sex-related maturation occurs at the age of 7 – 12 years in Pristis and 2 – 3 years at Anoxypristis. In small swordfish and environmentally friendly, this number reaches a total size of 3.7 – 4.15 m (12.1–13.6 feet), in giant swordfish at 2.8 – 3 m (9.2 – 9.8 feet), in sawn sharks around 2.55– 2.6 m (8.4– 8.5 feet), and also in lean saws at 2– 2.25 m (6, 6– 7.4 feet). This shows that the size of the generation is related to 4.6 years in lean saw fish and 14.6-17.2 years in the remaining varieties.
As is known from many elasmobranchs, the breeding seems harsh, with sharks generally suffering from lacerations from their partner chainsaw. Through hereditary screening it has been revealed that at least small swordfish can also be re-created by parthenogenesis in which no humans are involved and also the spawn is a duplicate of their mother shark.
Feed (How to eat differently from other livestock)
Chainsaw are predators that prey on fish, mollusks and crustaceans. Old stories about sharks attacking large victims such as whales and dolphins by removing meat objects are now considered a misunderstanding and are also inaccurate. People are also too big to be considered potential prey.
In slavery they are usually fed ad libitum or in fixed amounts which (per week) equal to 1-4% of the total weight of the saw shark, but there are indicators that slaves develop significantly faster than their wild counterparts.
Rostrum (saws) plays a sizeable task both in placing the victim and also catching it, which is unique among jaw fishes. The head and pulpit include thousands of sensory organs, Lorenzini ampullae, which allow sharks to identify and monitor the movements of various other microorganisms by measuring the electric fields they send.
Electroreception is also understood by some other fish family members. In sawfish, sensory organs are most densely loaded at the top and bottom of the pulpit, although with small differences in regulation and the amount depends on the particular species. Those on the upper side allow sharks to take photos of three-dimensional locations on it, also in low visibility waters.
Chainsaw Shark Senses
Using their saws as an extended sensing tool, fish saws have the ability to “see” their entire environment by maintaining a low placement on the seabed. It seems that sharks can detect prospective targets with electroreception from around 40 cm (16 in). Some waters where swordfish are in real time very dirty, limiting the possibility of hunting by sight.
Very little is understood about the reproductive behavior of saw fish, but all ovovivipar species with adult females give birth to young children once a year or every two years. On the smalltooth and also the green sawfish the same size as 3.7 – 4.15 m (12.1 – 13.6 feet), on the largetooth chainsaw at 2.8 – 3 m (9.2 – 9.8 feet) , in dwarf sawfish around 2.55 – 2.6 m (8.4 – 8.5 feet), as well as in lean swordfish at 2 – 2.25 m (6.6 – 7.4 feet).
As is known from many elasmobranchs, the breeding seems hard, with ornamental fish that generally maintain lacerations from their partner chainsaws. Through genetic screening, it has actually been revealed that at least small swordfish can also replicate with parthenogenesis where no male is needed and spawning is a duplicate of their mother. In Florida, United States, it is seen that about 3% of small egg laying eggs are the result of parthenogenesis.
Environmental Damage and the Extinction of Chainsaw Sharks
Fishing is the main reason for the sharp decline in swordfish, another big problem is habitat destruction. Coastal and estuarine habitats, including mangrove forests and seagrass beds, are usually destroyed by human growth and contamination, and this is also an important environment for saw sharks, especially their children.
The saw and its components have actually been used for countless things. Apart from being a ray of sharks, swordfish have some of the most valuable fins for use in shark fin soup, the equivalent of tiger, mako, blue, porbeagle, thresher, hammer, hammer, sandbar, blacktip and bull shark. As traditional medicine (mainly Chinese medicine, but also recognized from Mexico, Brazil, Kenya, Eritrea, Yemen, Iran, India, and Bangladesh) shark, oil or powder parts have actually been declared to combat respiratory problems, eye problems, rheumatism. , pain, inflammation, scabies, skin ulcers, diarrhea, and stomach problems, but there is no evidence to support this use.