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Interesting facts about the pied hawk

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We found 15 interesting facts about those long spared

Cetorhinus Maximus

The basking shark, also called the basking shark, is the second largest known fish in the world after the whale shark. Its body length is impressive, reaching ten meters, and its weight ranges from four to six tons. However, this giant is a harmless shark, since it feeds only on zooplankton. It moves slowly, filtering hectoliters of seawater with its huge mouth.

1

The longtail fish (Cetorhinus maximus) is a species of large marine cartilaginous fish.

Cartilaginous fishes are a group of aquatic vertebrates traditionally classified as Pisces, including chimeras, rays and sharks - about 1200 species in total. 

Fossil records show that sharks date back over 400 million years, while stingrays most likely appeared 200 million years ago and chimaeras appeared about 360 million years ago.

2

The long-tailed lizard has many other names.

It is called: basking shark, basking shark, basking shark, and sunshark (due to its tendency to bask in the sun's rays just below the surface of the water).

3

The longnose shark is the second largest known fish on Earth after the whale shark.

Together with the whale shark (Rhinocodon Typs) and the largemouth shark (Megachasma pelagios), it belongs to the planktivorous sharks.

4

The long-tailed lizard reaches enormous sizes.

An adult basking shark typically reaches the body length... 6,70 of 8,80 meters, but can reach 10 meters or more. Largest recorded individual measured 12,27 m long and was caught in a herring net in the Bay of Fundy, Canada, in 1851. The weight of this fish exceeded 9 tons.

The weight of the trucker is approximately 5,2 tons.

5

The thick, large liver with a long slit allows it to float in water.

This amounts to approx. 25% the weight of his body. The color of the long-slit body is almost uniform - dark gray, from gray-brown to black, with the back darker than the underside. There are often light or dark spots on the back, sides of the body and under the head.

The undersides of the fins are also dark gray, but juveniles have white fins with clearly defined dark areas. In very rare cases, farsighted dogs can develop albinism.

6

The pectoral fins of the basking shark are very wide.

The longtail has two dorsal fins, the first of which, shaped like an almost regular isosceles triangle, is clearly longer than the second. The base of the first dorsal fin is located in front of the base of the ventral fins. The second dorsal fin is located almost opposite the anal fin and is almost equal in size to it.

The caudal fin is crescent-shaped.

7

The most characteristic feature of the long slit is its five pairs of huge gill slits.

They surround his body behind his head like a collar, and almost touch each other above and below. The name of the fish comes from these long slits. 

8

The shape of the long-slit body resembles a cigar.

Therefore, they are often confused with white sharks. However, they are distinguished, among other things: by the shape of the jaw, which in case of long-slit jaws has the shape of a cave up to 1 meter wide, is equipped with 4-9 rows of modified teeth located in the mucous membrane, small, cone-shaped in number, up to 3000 pieces.

9

Long-tailed snails feed on zooplankton.

To get food, they often swim under the surface of the water with their mouths wide open. They swim slowly, filtering plankton from the water, which ends up in their gill septa and is then swallowed. Zooplankton, mainly copepods, are captured by the mucus-coated teeth and washed down the esophagus when the mouth is closed.

The longnose shark is the only type of filter-feeding shark that feeds without drinking water, but simply by passing a stream through the throat.

It is capable of filtering approximately 1800-2000 tons of water per hour. An adult long-tailed lizard requires up to 500 liters of zooplankton per day to meet its nutritional needs.

10

Longspotted sharks usually lead a solitary lifestyle or gather in small schools.

Sometimes there are aggregations of more than 100 sharks. They move slowly, filtering plankton from the water, extending their dorsal fin out of the water, and even rotating their abdomen. These fish swim at a speed of about 3,7 km/h and are not inclined to swim away from approaching ships.

Despite their slowness, they are able to make a dash and jump completely out of the water. These jumps may be an attempt to get rid of parasites from the shark's body (ectoparasites), of which the most important are sea lampreys, which bite into the shark's skin without penetrating it.

Longtail sharks are also attacked by the cigar shark (Isistius brasiliensis), which uses its teeth to bite off chunks of flesh from large fish and marine mammals.

11

Long-spotted lizards have virtually no natural enemies.

They are known to be attacked by killer whales, but few predators prey on these sharks. There is information about what great white sharks, in particular, feed on: longspotted carcass.

12

The spotted eagle is an ovoviviparous species.

The young hatch from eggs that mature in the mother's body. The embryos feed on the yolk and there is no placental connection with the mother. The number of litters and size of the newborns is unknown, but it is estimated that their gestation may last from 1 to 3,5 years.

Males probably reach sexual maturity at a length of 4-5 meters, which corresponds to the age of 12-16 years. Females mature at a length of 8,1-9,8 meters.

The average lifespan of long-spotted birds is about 50 years.

13

Despite their enormous size, long-slits do not pose a threat to humans.

They allow divers to get close to them. However, humans pose a threat to long-spotted lizards. Historically, this species was considered a valuable game fish due to its slowness, lack of aggression, and abundance. The peak of catch of this fish reached 100-150 years ago. They were hunted for the oil extracted from their liver - one medium-sized shark took 300 of 800 liters of fat, and in some cases even over 2000 liters, since the huge long-slit liver contains up to 60% thick. They were hunted with a harpoon.

Currently, the demand for long-spotted fat has decreased significantly. 

To learn more …

14

Scientists classify long-spotted birds as an endangered species.

Due to slow growth, a long gestation period, low fertility and late puberty, this species is not able to recover quickly, so it was decided to protect it. In 2005, the species was included in the Red List of Threatened Species. It is currently classified as "vulnerable".

15

Long snakes used to be called sea snakes.

Because these sharks sometimes swim on the surface of the water in large groups, sometimes one after the other, with their dorsal fins raised, the sight has been interpreted as a sea serpent or other swimming monster.

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