What Is The Rarest Fish In The World?

Over the past few years, several concerns have been raised about the negative impact of overfishing on different aquatic species and their habitats. As a result of this, several fish species are considered to be endangered and become rare in the ocean.

What is the rarest fish in the world? According to fisheries and aquaculture experts, the Devils Hole Pupfish is the rarest fish all over the world. They can only be found in the Devil’s Hole Geothermal pool in East Nevada’s Death Valley National Park.

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In this short read, you will find the rarest fish in the world and what makes them stand out.

Rarest Fish In The World

A fish can be rare for many reasons. Almost all of the rare fish have had their wild populations depleted by most people. It is the form of overfishing or some productions that diminished their natural habitat.

The good news is, there are plenty of laws protecting these rare fishes from further threats. But there are still not yet recovered in the wild. Here are some of the fishes that survived the test of time and made a huge recovery through conservation efforts.

Devils Hole Pupfish

The Devils Hole Pupfish is considered by experts to be the rarest fish in the world. They only live in a single, tiny limestone cavern back in Nevada’s Death Valley Park.

They got their name for the Devil’s Hole Geothermal, and they have the smallest known geographic range in every vertebrate in the wild.

Sakhalin Sturgeon

Sakhalin Sturgeon is the epitome of rare because they hardly show themselves in the wild. They are never an abundant fish species and can only be found for sale in the markets of Hokkaido, Japan, back in the 1950s.

Since then, their population declined drastically, and their total number is unknown. But it is believed that 10 to 30 adults spawn un the Tumnin River annually.

Red Handfish

The Red Handfish is very easy to notice because it uses its fins to move across the ocean floor. The fins look like hands. That is why it is called Handfish, and they are first discovered back in the 1800s.

They always had a small population until early 2018, a group of about 20 to 40 Red Handfish were known to be swimming and having their habitat in Frederick Henry Bay off the coast of Tasmania.

Adriatic Sturgeon

Back in the day, Adriatic Sturgeon was more rich and widespread in the Adriatic Sea. Overfishing is why they are starting to get endangered, and there may be only 250 wild fish left.

They become extinct in some of its previous habitats. To preserve them, some have been raising them on fish farms, and they are continuously getting restocked in Italy.


Overall, we can no longer abide by the old saying that there is plenty of fish in the sea. It might be true on some continents, but as a whole, we are losing them.

Overfishing and climate change have affected how they usually live in their normal habitat, and it is only a matter of time before all these fishes on this list will get extinct.