Which is the largest and smallest fish in the world?

Heaviest cartilaginous fish Whale shark 15-20 tons
Smallest predacious fish Dwarf lanternshark 5.9 – 7.8 inch (15-20 cm)

What is the most smallest fish in the world?

In the murky blackwaters of the peat swamp forests of Southeast Asia lives the world’s smallest fish, the dwarf minnow of the genus Paedocypris. This extreme environment, characterized by low oxygen and high acidity, is home to several miniaturized fish species.

Which is the biggest and largest fish in the world?

The biggest fish in the ocean is the Rhincodon typus or whale shark. Despite their tremendous size and intimidating appearance, whale sharks are commonly docile and approachable.

Who is the largest fish in the world?

The whale shark (Rhincodon typus) earns the name “whale” solely because of its size. Just as the blue whale (Balaenoptera musculus) is the largest living mammal*, the whale shark is the largest species of any fish, known to reach more than 40 feet in length.

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What is the smallest fish called?

The world’s smallest fish is Paedocypris progenetica, and was only recently discovered in the last decade. Scientists discovered it living in the forest swamps on the Indonesian island of Sumatra. Mature females measure just 7.9 millimeters — less than one third of an inch!

What is the most dangerous fish?

10 of the World’s Most Dangerous Fish

  • Candiru. …
  • Great White Shark. …
  • Moray Eel. …
  • Tigerfish. …
  • Piranha. …
  • Stonefish. Stonefish (Synanceia verrucosa). …
  • Atlantic Manta. manta ray moodboard—moodboard/Thinkstock. …
  • Electric Eel. electric eel Toni Angermayer/Photo Researchers.

What is the smartest fish in the world?

The East African cichlid fish Julidochromis transcriptus, a tiny fish no more than seven centimetres long, is able to recognize unfamiliar individuals just by looking at their eyes. This stripped little fish lives hidden among rocks in Lake Tanganyika, one of the world oldest and largest freshwater lakes.

What are the ugliest fish in the world?

Blobfish. Known as “Mr. Blobby” affectionately and listed as the ugliest fish in the world. This species is found in the deepness between the coasts of Australia and Tasmania, and its body is made up of a cartilaginous mass, without having any muscle.

What pet fish lives the longest?

Livebearing fish like platys, mollies, and swordtails generally live less than 5 years at best. Other smaller community species like tetras, rasboras, and the like live around 3 to 5 years. The aquarium fish species that tend to live the longest are goldfish, loaches, silver dollars, and certain species of cichlids.

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What fish is called King of the sea?

Salmon is called the king of fish.

What fish is caught the most?

The world’s 23 most fished species: From anchovy to pilchard, via tuna. Despite a steep drop in catches in 2012, Peru’s anchovy remained by far the most caught fish in the world, shows a new report by the Food and Agriculture Organization […]

Can a fish feel pain?

Neurobiologists have long recognized that fish have nervous systems that comprehend and respond to pain. Fish, like “higher vertebrates,” have neurotransmitters such as endorphins that relieve suffering—the only reason for their nervous systems to produce these painkillers is to alleviate pain.

Which is the fastest fish?

Not all experts agree, but at top speeds of nearly 70 mph, the sailfish is widely considered the fastest fish in the ocean. Clocked at speeds in excess of 68 mph , some experts consider the sailfish the fastest fish in the world ocean.

What is the weakest fish?

The world’s smallest fish depends on the measurement used.

List of smallest fish in the world.

Common Name Dwarf pygmy goby
Species Pandaka pygmaea
Family Gobiidae
Standard length of smallest known mature individual 9 mm (0.35 in), male
Maximum known standard length 11 mm (0.43 in)

Do fishes sleep?

While fish do not sleep in the same way that land mammals sleep, most fish do rest. Research shows that fish may reduce their activity and metabolism while remaining alert to danger. Some fish float in place, some wedge themselves into a secure spot in the mud or coral, and some even locate a suitable nest.

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