What Are Some Interesting Facts About Fish?

Nose Doctor FishInteresting facts about fish include…

  • There are approximately 27,300 different species of fish known to man, as of 2015. However, there are other species that are unknown or that have yet been described.
  • Some scientists estimate that there are around 31,500 species of fish on the planet.

  • The world’s biggest fish is the whale shark, which can grow to be more than 50 feet in length. The basking shark runs a close second at 45 feet in length.
  • The oldest primitive fish still alive today include lampreys and hagfishes, both of which are bottom-dwelling species that look much like eels. They date to the Carboniferous period, which was around 350,000 years ago.