40 Surprising Fish Facts

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Did you know that Jellyfish and crayfish aren’t actually fish? Keep on reading to discover more about the colorful and beautiful world of fishes.

1. Fish have gills that extract oxygen.

2. The biggest fish ever caught weighed 168 pounds.

3. There are around 30,000 known species of fish.

There are 30000 known species of fish.
Source: Media Source

4. Fish have small brains as compared to other animals.

5. Tuna can swim at speeds of up to 70 kph.

6. A group of fish is called a school.

A group of fish is called a school.
Source: Media Source

7. Jellyfish and crayfish aren’t actually fishes.

8. Triggerfish can swim backward.

9. The goldfish has no eyelids.

The goldfish has no eyelids.
Source: Media Source

10. Most brands of lipstick contain fish scales.

11. Most fishes can taste without opening their mouths.

12. Herring fishes communicate through farts.

Herrings fish communicate through farts.
Source: Media Source

13. Lungfish can live out of water for several years.

14. The oldest known fish was an Australian lungfish.

15. White shark can raise their body temperature.

White shark can raise their body temperature.
Source: Media Source

16. Fish use a variety of low-pitched sounds to communicate with each other.

17. Starfish do not have blood or a brain.

18. The jaw of the fish is not attached to its skull.

The jaw of the fish is not attached to its skull.
Source: Media Source

19. Every year hundreds of fishes rain from the sky in Yoro, Honduras and the event is called “Rain of Fish”.

20. Some fishes are able to change their sex.

21. Sharks are the only fishes with eyelids.

Sharks are the only fish with eyelids.
Source: Media Source

22. The biggest fish in the world is the giant whale shark.

23. The most poisonous fish in the world is the stone fish.

24. The fastest fish is the sailfish.

The fastest fish is the sailfish.
Source: Media Source

25. The slowest fish is the seahorse.

26. Some fish do not have scales, for example, Sharks.

27. The Puffer Fish contains tetrodotoxin, a deadly poison.

The puffer fish contains tetrodotoxin, a deadly poison.
Source: Media Source

28. The mudskipper spends most of its time out of the water.

29. Anableps is a four-eyed fish that is able to see above and below water at the same time.

30. The catfish’s entire body is covered with taste buds.

The catfish’s entire body is covered with taste buds.
Source: Media Source

31. The catfish has over 27,000 taste buds.

32. With bony skeletons, fishes were the first vertebrates to appear on Earth.

33. Goldfish can see Infrared radiation which is invisible to Human being.

Goldfish can see Infrared radiation which is invisible to Human being.
Source: Media Source

34. There is a fish in Greenland that can eat polar bears.

35. Seahorses are the only fish that can swim upright.

36. Jellyfish have no backbones.

Jellyfish have no backbones.
Source: Media Source

37. Baby fishes are called pups.

38. Lampreys and hagfish are the most primitive form of fish still living today.

39. There are at least 40 known species of flying fish.

There are at least 40 known species of flying fish.
Source: Media Source

40. Most fishes reproduce by laying eggs.

40 Surprising Fish Facts
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