They say there are lots of fish in the sea, and as it turns out it’s completely true! There are millions, if not more, of species that we haven’t even discovered yet! some because they live in extremely remote areas, some because there are not many of them left. From a very special fish that can electrocute its enemies, to a somewhat rebellious fish that prefers to walk instead of swimming, here are 20 Fish That Are Born Only Once In A Thousand Years.
#The barreleye fish
Barreleyes, also known as spook fish (a name also applied to several species of chimaera), are small deep-sea argentiniform fish comprising the family Opisthoproctidae found in tropical-to-temperate waters of the Atlantic, Pacific, and Indian Oceans.
This peculiar fish is known for its strange eyes — two bright green upward-pointing orbs that are visible through the transparent dome on its forehead. The upward-pointing eyes are able to spot prey above them in the water column but can rotate forward when needed. The barreleye is actually quite small, usually up to six inches (15 centimeters) long. The barreleye’s diet consists primarily of zooplankton. Barreleyes are thought to be solitary creatures that inhabit the ocean’s twilight to midnight zones, usually between 2,000 to 2,600 feet (600 and 800 meters).
Elephant fish are an unusual fish with an elongated body and a unique trunk-like tip on their snout. They use the sensory pores on their long snout to find prey, have silvery skin with irregular dark markings on their sides and fins. While males have larger snouts than females, females grow larger in size. Their name is deceiving as an elephant fish is not actually a fish. They are a type of chimaera, a cartilaginous fish meaning they are related shark and rays. Elephant fish are quite similar to sharks and are covered with a smooth shiny skin and lack scales.
Elephant fish caught in the Port Phillip region generally range in size between 1.5 kg and 3 kg, with occasional bigger fish to 5 kg or more. The larger fish are generally females. Elephant fish are a fairly easy fish to catch and will take a variety of baits presented on the bottom using either a running sinker or paternoster rig.
# European sea sturgeon
The European sea sturgeon (Acipenser sturio), also known as the Atlantic sturgeon or common sturgeon. The European sturgeon is a long-lived, anadromous species. that historically bred in all large rivers in Europe. The last remaining population occurs in the Gironde-Garonne-Dordogne basin in France. The European sturgeon is listed as endangered throughout its range under the Endangered Species Act.
The European sturgeon is a large species that can grow up to 20 feet in length. It has an olive‐black upper body and a white belly. Like all sturgeon, the species has a cartilaginous skeleton, heterocercal caudal fins (upper lobe larger than lower), single spiracle respiratory openings, a bottom-oriented mouth with four barbels (sensory “whiskers”), a flat snout, a strong rounded body, and unique ganoid scales. The species can tolerate a wide range of salinities and spends most of its life in saltwater (close to the coast), but migrates to spawn in freshwater. They feed on crustaceans, mollusks, and especially worms, and small fishes as juveniles.
Parrotfishes are a group of about 90 fish species regarded as a family (Scaridae), or a subfamily (Scarinae) of the wrasses. With about 95 species, this group’s largest species richness is in the Indo-Pacific.
Parrotfish are colorful, tropical creatures that spend about 90% of their day eating algae off coral reefs. This almost-constant eating performs the essential task of cleaning the reefs which helps the corals stay healthy and thriving.
Parrotfish live in reefs all around the world, but they all generally live about 5-7 years and grow to 1-4 feet in length. They typically feed during the day and sleep—by wrapping themselves in a safety cocoon made of mucus or by finding a hiding place in the coral—at night.
The fangtooth is a carnivorous fish that lives in the deep sea. It should not be confused with the fangtooth moray, which is an eel that lives in a completely different habitat than the fangtooth fish.
The fangtooth is a small fish with a laterally compressed body. Despite their small size, fangtooths have large heads and disproportionately long sharp teeth. Fangtooth fish colors range from black to dark brown as adults and are light gray when young. Their bodies are covered with prickly scales and spines. The pelagic fangtooths are among the deepest-living fish, found as far as 5,000 m (16,000 ft) down. When fangtooth are young, they tend to live in shallower depths.
The common fangtooth is found around the world in temperate marine waters. The fangtooth is a carnivorous and highly mobile fish, feeding on small fish, shrimp, and squid. When they are young, they filter zooplankton from the water and migrate closer to the surface at night to feed on crustaceans. Adults either hunt alone or in schools. Unlike other predators that ambush their prey, fangtooth fish actively seek out food.
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