Here we show the 10 World's oldest prehistoric fish, consider and note :
1. Hagfish
According to records, hagfish have been around for over 300 million years. Found in relatively deep waters, these animals are sometimes called slime eels, but they are not actually eels, and in fact they do not even like fish at all. According to some scientists, they are a very strange animal in all respects, they have the skull but did not have a backbone, and they have two brains. Nearly blind, they feed at night they eat carcasses of large animals (fish, whales, etc.) that fall to the seabed.
2. Lancetfish
Lancetfish known as fish existing in prehistoric times, looked out and the teeth on the jaws and sharp fins on his back. Up to two meters long Lancetfish, this predator was found in all oceans except for the polar regions, Lancetfish eat small fish and squid, and Lancetfish also eat the big fish.
3. Arwana
Osteoglossids (Arowana), these fish are already in the Jurassic period. Today, they are found in the Amazon, and in some parts of Africa, Asia and Australia. Sometimes kept as exotic pets. Arowana is a fish that eat smaller animals and worms that they could get, including birds and bats which they catch while flying, Arowana can also jump up to 2 meters into the air. In China, the Arowana is known as "fish-dragon" because of their appearance, and they are considered a sign of good fortune.
4. Frilled Shark
This deep-sea predators, sharks are one of the most primitive living today, is a relic of the Cretaceous, sharks can grow up to 2 fraying meter (size larger than the female shark shark boys) and they live in deep water, where they mostly eat squid. They are harmless to humans, and actually, sharks spend their entire lives without seeing a human because they live in the deep ocean. Only dead specimens usually seen on the surface and recorded by fishermen or scientists.
5. Sturgeon
Sturgeon are known as one of the main sources of caviar (fish eggs) due to excessive fishing, the population is being threatened at this time. The largest species of sturgeon can grow to 6 meters, which is equal to the white shark, Sturgeon eat small animals from the ocean floor and poses no danger to humans, unless provoked.
6. Arapaima
Glimpse of this fish is similar to the arowana fish, Arapaima Amazon considered the largest freshwater fish in the world. According to the initial description, can grow up to 4.5 meters, but until recently, large Arapaima is rarely found and most arapaimas average adult size of 2 meters. Arapaima fish eat small crustaceans and whatever small animals can get into their mouths. One interesting feature of this fish is breathing oxygen from the air in order to survive. Arapaimas pose no danger to humans and are often hunted for their meat, Arapaima unfortunately very rare nowadays.
7. Sawfish
These animals are the victims of the Cretaceous period, and can be found either at sea or in the river at a depth of 100 km with a length of 7 meters, this fish looks like a shark with a mouth that resembles a chainsaw, but not included in the Sawfish species of shark only similar . Sawfish was actually not a race of sharks, stingrays but including race, from the bottom of his body shape is flat, not like a shark underneath the more streamlined streamlined shape that makes it easy to swim with the sharks in the water quickly, and Sawfish have a small mouth that is parallel to lower body is fused with his body. Sawfish fins also have a front that is parallel to the bottom.
8. Alligator Gar
This thick scaly predators found in the U.S. south, north and east of Mexico, becoming the largest freshwater fish in North America. Alligator Gar can grow to 4 meters and weigh up to 200 kg. Alligator Gar are so called because of their appearance, and alligator-like reptile jaw length, has a second hand sharp teeth. Alligator Gar is a voracious predator and has been known to be dangerous to humans, though not confirmed death from Alligator Gar has been recorded to date. Gar is one of the oldest fish alive today.
9. Polypterus Senegalus
Fish Africa is often called the "dinosaur eel", because of their appearance and serrated dorsal fins. They actually are not eels, but family members Bichirs. Although often sold as an exotic pet "dinosaur eel", they can survive out of water for long periods of time as long as their skin is still damp.
10. Coelacanth
Coelacanth is the most famous of all the "living fossil" and deserves to be # 1 on this list, because this is the best example of a Lazarus taxon, this is supposed to be long extinct animals and unexpectedly found alive today. This fish is supposed to have been extinct in the Cretaceous period, along with the dinosaurs, but in 1938, a live specimen was caught in South Africa. Since then, specimens have been seen and photographed, and the second species of coelacanth found in Indonesia and even in 1999. This is a large predatory fish, 2 meters in length, they feed on small fish, including small sharks, and are usually found at sea in the dark waters.
reff: indosandster.net
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