The rarest fish in the world

Large numbers of animals, such as fish, inhabit the seas, oceans and freshwater environments. There are different specimens of very common fish, such as sardines, trout, sturgeon or white shark. However, many others have more striking and unknown features that allow us to classify these animals as "rare ". These curious fish can be found anywhere in the world, at shallow or deep depths, feeding on different prey and adopting totally different ways of life..

If you want to know some of the characteristics of the rarest fish in the world, as well as their diet and habitats, do not hesitate to read this interesting article by AnimalWised.

You may also be interested in: The 18 rarest animals in the world Index
  1. Drop fish (Psychrolutes marcidus)
  2. Sunfish (Mola mola)
  3. Stonefish (Synanceia horrida)
  4. Common sawfish (Pristis pristis)
  5. Dragon fish (Stomias boa)
  6. Marine lamprey (Petromyzon marinus)
  7. Lizard Peje (Lepisosteus spp.)
  8. Parrotfish (Family Scaridae)
  9. Toadfish (Halobatrachus didactylus)
  10. Pink fish with hands (Brachiopsilus dianthus)
  11. Other rare fish in the world

1. Drop fish (Psychrolutes marcidus)

In addition to being one of the rarest fish in the world, it is also known for being "the ugliest fish in the world ", because out of the water it has a jelly-like appearance with a pink color, in which a very big face and sad expression with large eyes and a structure similar to a huge nose. It is characterized by its low body density, allowing it to float in the water without the need to present a swim bladder like most fish.

The dropfish or blotfish is found in the deep marine waters of countries such as Tanzania and Australia. In them it feeds on numerous mollusks, crustaceans and the occasional hedgehog. However, it does not perform an active search for food, since its movements are slow and it ingests everything that is in its path.

2. Sunfish (Mola mola)

This species is known for its large size, being able to measure more than 3 meters and weigh more than 2,000 kilograms.. His body is flattened laterally, without scales, with greyish colorations normally and oval shaped. In it are small body fins, small eyes in the anterior region and a narrow mouth with small teeth. Like the previous specimen, it lacks a swim bladder as a flotation organ.

Regarding its distribution, the sunfish is common in practically all the seas and oceans of the world. In fact, many divers have been able to observe it up close in the Mediterranean Sea, the Atlantic Ocean or the Pacific Ocean. It feeds mainly on salps and jellyfish, as these are included among its favorite foods.

3. Stonefish (Synanceia horrida)

Due to their protrusions on the body and their grayish, brown and / or mixed colors, these large fish have the ability to camouflage themselves on the seabed, pretending to be a stone, hence the common name of the species. However, what most characterizes the stonefish is its dangerousness, as it has barbs or spines that produce a neurotoxic poison on its fins, capable of causing death to other animals that come into contact with it.

This rare fish lives in the Pacific and Indian Oceans, usually found at shallow depths. Its diet is varied, as it can feed on mollusks as well as crustaceans and other fish. Its hunting technique consists of opening its mouth so that, when the prey is close, swim quickly towards it and finally swallow it.

¿Do you want to know more about the types of fish feeding? Then don't miss this other article: "¿What do fish eat? ".

4. Common sawfish (Pristis pristis)

The name of this long fish refers to the great resemblance who has his snout that of a saw or handsaw, as it is large and has dermal scales like teeth with which it can hunt and protect itself from predators. In addition, it has sensory receptors that allow it to perceive waves and sounds produced by other nearby animals, thus offering the sawfish information on the location of possible dangers or prey..

It lives at shallow depths in the fresh and salty waters of the African, Australian and American regions. In them it feeds on other animals such as shrimp, crabs or salmon. Among its hunting techniques is the attack on its prey with the serrated snout and its subsequent ingestion when they are already wounded. Without a doubt, it is one of the rarest fish that exist, ¿don't you think However, it is not the only one with these characteristics, since within the different types of sharks we find the famous saw shark.

5. Dragon fish (Stomias boa)

Another rare fish that has been recorded is the dragon fish. It is characterized by presenting a large head region in proportion to its body. In it are two large eyes and a large jaw with a few teeth so long that you can't keep your mouth closed. This amazing fish with such a terrifying appearance has dark body colors such as gray, brown or black. However, there have also been cases of bioluminescence, another characteristic of these animals that live in the great ocean depths..

They are found mainly in the Gulf of Mexico and the Atlantic Ocean, approximately 2 000 meters deep, where it can feed on small invertebrates and numerous algae, since it is an omnivorous animal.

6. Marine lamprey (Petromyzon marinus)

This fish, which can live for more than 15 years, has a morphology similar to that of an eel, often reaching one meter in length. However, what best characterizes the lamprey is the no scales and jaws, because its mouth is shaped like a suction cup and it houses a large row of small horny teeth.

It lives in the marine environment, mainly in the Atlantic Ocean and the Mediterranean Sea. However, as anadromous fish, it travels to rivers to reproduce. Regarding their diet, they are hematophagous or predatory ectoparasites, since they stick to the skin of other fish and scrape it to suck the blood resulting from the wound..

Discover more rare fish similar to the sea lamprey in this other article: "Jawless fishes ".

7. Lizard Peje (Lepisosteus spp.)

This fish with head similar to that of a lizard is considered a prehistoric animal, since it has been on Earth for more than 100 million years. It is characterized by its elongated and cylindrical body in which there is a large snout with strong jaws. In addition, it has shiny and thick scales that offer protection against other large predators. They are very feared since, in addition to being very voracious, they can exceed 100 kilograms in weight and 2 meters long.

The alligator peje is freshwater, found in American waters. However, the fossil record has made it possible to know the existence of this fish in other places such as the African and European continents. It is a great predator of other fish, as its hunting technique consists of staying still and reaching high speeds to unexpectedly catch the prey when it is closer. Another of the most spectacular rare fish that exist.

8. Parrotfish (Family Scaridae)

There are numerous species of parrotfish, however, these animals are characterized by the presence of some teeth what they give parrot beak shape. In addition, among its amazing features, the ability to change coloration of its body and even the sex of the animal. It is precisely its coloration that has also allowed parrotfish to be included among the most beautiful fish in the world. Unlike the many other rare fish mentioned, the parrot fish is not large, as its length varies between 30 and 120 centimeters approximately..

It inhabits practically all the oceans of the world and feeds mainly on algae that it obtains from corals detached from reefs. With its teeth located in the throat, it manages to gnaw the coral and, after ingesting the algae, it deposits the feces in the sand..

9. Toadfish (Halobatrachus didactylus)

As its name suggests, reminiscent of the morphology of a toad, This brown-colored fish has a dorsoventrally flattened body and a large mouth. It is also striking for the presence of spines on their fins, capable of producing poison and can cause harm to those who come into contact with it.

Toadfish are found mainly in the Indian, Pacific and Atlantic oceans, although some species can also live in fresh waters. In them it feeds on numerous crustaceans, mollusks and other smaller fish, which it can catch at high speeds..

Image: péces.com

10. Pink fish with hands (Brachiopsilus dianthus)

Although the sizes may vary from one specimen to another, practically all these fish tend to be around 10 centimeters long, so it is not a large animal. As its name suggests, the pink fish with hands is characterized by presenting reddish-pink colorations and peculiar pectoral fins reminiscent of a kind of hands. Her mouth is also striking, because although it is very narrow with respect to her body, it has large, very fleshy lips.

Thanks to the fossil record we know that the pink fish with hands inhabited different seas and oceans of the world, but it is true that today its presence is only known in Oceania, mainly on the island of Tasmania. In it, it feeds on the small invertebrates found on the ocean floor, as they are practically benthic and with its pectoral fins as hands it can move through the substrate in search of prey.. ¿Have you ever seen a fish as rare as this?

Image: pinterest.com

Other rare fish in the world

The great diversity of fish found in the world's seas, oceans and freshwater environments allows us to see many rare species. Likewise, we still do not know all the species that inhabit the aquatic environment, so it is impossible to know which are the rarest fish in the world. The above are part of the rare fish known so far, and then we show some of the rarest fish in the world:

  • Black swallower (Chiasmodon niger)
  • Lanternfish (Centrophryne spinulosa)
  • Axfish (Carnegiella strigata)
  • Lionfish (Pterois antennata)
  • River needlefish (Potamorrhaphis eigenmanni)
  • Devil fish (Hypostomus plecostomus)
  • Alagón tusk (Cobitis vettonica)
  • Red-lipped batfish (Ogcocephalus darwini)
  • Guitar fish (Rhinobatos rhinobatos)

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