With so many fish in the sea, here is a list of the top 9 strange fish that KnowIndider want to share with you!

Siamese Fighting Fish

4204 live science
Photo: Live Science

The scientific name of Siamese fighting fish is known as betta splendens.

This fish is classified under the classification of betta. It is an aquarium fish. It belongs to a family of the Gourami family. Other names of this fish are pla-kad and trey krem. They can mingle with other fish. The body length of the fish is seven centimetres and it appears in colours of red, green, opaque, albino, orange, yellow and blue, etc.

The Lifespan of this fish is about 2 years only. Water temperature must be around 23 degrees– 27 degrees.


3533 fish laboratory
Photo: Fish Laboratory

The scientific name of Oscar is Astronotusoscellatus. It is classified under the higher classification of Astronotus. Other names of Oscar are tiger Oscar, marble cichlid and velvet cichlid.

These species are found in South America, Australia, the United States and China. It is seen as aquarium fish. The body length of Oscar is about 36cm and the mass of the body is 1.4 kg. They grow quickly and are carnivores.

These have territorial behaviour. The lifespan of this fish is about 10-13 years.

Sword Fish:

3536 nyt 1
Photo: The New York Times

The scientific name of swordfish is Xiphias gladius.

It is classified under the higher classification of Xiphias; Swordfish are well known as broadbills in some of the countries. These migrate from one place to another and are mostly found in tropical and temperate parts of Indian Oceans, Pacific Ocean and the Atlantic Ocean. They are found under the depth of 550m. They reach a length 9.8 ft and mass of 650-kilo grams. It is called as swordfish because it has a sword-like spear to kill prey and make it is easier to eat. These are vigorous fighters.

It is hunted by humans and taken as food and lives for about nine years.

Rainbow Trout:

3537 bbc 1
Photo: BBC

The scientific name of this type of fish is rainbow trout is Oncorhynchus mykiss. It is classified under the classification of Oncorhynchus.

These are species of salmonid. It is represented as symbol Washington. It is found Flaming Gorge Reservoir, Watauga Lake, and Lake Mohave and many more. They live in oceans for two –three year and move to spawns. Spawns of these fishes are called as steel head. Maximum mass of a body is about 9 kg.

It is introduced as food and sport for almost 45 countries in the world. Their lifespan is usually about 11years and is one of the healthiest food to include in your diet.

Blob Fish:

3539 blobfish hubpages
Photo: Hubpages

Scientific name of blobfish is Psychroulutesmarcidus.

The fish is classified under the classification of Pdychrolutes and is a deep-sea fish. It is a family member of Psychroulutidae. It is found in the seawater of Australia, New Zealand and Tasmania. Length of blobfish is typically shorter than 30 cm. They live in depths between 600 to 1200 m. It feeds on crustaceans.

Their lifespan is not determined.

Zebra Fish:

3531 glofish electric green vox
Photo: Vox

The scientific name of zebrafish is Danio rerio.

It is classified under the classification of danio. Zebrafish is found in tropical freshwater and belongs to minnow family of the order Cypriniformes. It native is from the Himalayan region. This is a popular aquarium fish. It is sold under the trade name zebra danio. Zebrafish is widely used as a model organism in scientific research. It is the first vertebrate to clone. It is found in regions like India, Bangladesh, Nepal, Burma and Pakistan. These are mostly seen in the Ganges regions. These are omnivorous. It means their prey includes plankton of Phyto and zoo. These are seen in the aquarium.

Their lifespan is usually 5.5 years and shows signs of ageing over time.

Neon Tetra:

3814 fish 1
Photo: Pet Product News

The scientific name of Neon tetra is Paracheiodoninnesi.

It is classified under the classification of Paracheirodon. This is freshwater fish which belongs to a family of characin family. Its native is in black waters. It is seen in some of the countries like Peru and Brazil etc. Tetras are omnivores. It is kept in the same tank as the shoaling effect is enjoyable when they swim around the tank.

It is an aquarium fish and lives for about five years.

Ocean Sun Fish:

3527 vancouver sun
Photo: Vancouver Sun

The scientific name of Ocean sunfish is Mola mola. It is classified under the classification of mola.

It is the heaviest bony fish in the world. Sunfish diet consists of mainly Jellyfish; the reason is it is nutritionally poor. These will become food for predators like a sea lion, killer fishes etc. These are native to tropic waters and temperate to every ocean in the world. They swim up to 26 km per day.

Yummy dishes can be made out of sunfish and they, usually live for about 10 years in captivity, while their lifespan in their natural habitat is not known.

Atlantic Cod:

3528 oceana canada
Photo: Oceana Canada

The scientific name of Atlantic cod is Gadusmorhua. It is well known as benthopelagic. It is classified under the classification Gadus.

It is a family member of Gadidae. This fish is widely found in Bay of Biscay, north of Arctic Ocean, North Sea and Baltic Sea etc. and It can grow up to 2 meters in length and mass of the body is 96 kilograms.

It is widely consumed by humans. Commercially it is called as codling or cod. The lifespan of cod is about 25 years. It attains sexual maturity in between the ages of two and four. Their colour will vary from brown to green.

Fish are considered one of our ocean’s most important resources. In the United States alone more than 1.7 million jobs rely on commercial and recreational fisheries, and fishing generates more than $200 billion in revenue each year. They are a key species in ocean ecosystems around the world, from tropical waters of Southeast Asia to freezing temperatures in the Arctic. There’s an estimated 32,000 different species of fish, a number that’s greater than the total of mammals, reptiles, birds and amphibians combined. If you like this article, don't forget to like share and follow KnowInsider for more interesting news.
How to Take Care of your Ornamental Fish: 5 Tips for New Fish Parents How to Take Care of your Ornamental Fish: 5 Tips for New Fish Parents

Fish come in all different shapes and sizes, making them some of the coolest pets to own. Fortunately, fish are pretty easy to take care ...

How To Make Steamed Whole Fish - China How To Make Steamed Whole Fish - China's Traditional New Year Food

What do you eat for your Christmas dinner? Do you eat Stuffing turkey, ham, apple pies or fruitcakes? Correspondingly, what do Chinese people eat for ...

Top 7 Weirdest Dishes made from Fish around the World Top 7 Weirdest Dishes made from Fish around the World

Many cultures across the globe have thought up interesting ways of incorporating the fruits of the sea into unique recipes, often reflecting traditional ingredients and ...