5 Weird Things About Sawfish

5 Weird Things About Sawfish, Sawfish Images and Video

5 Weird Things About Sawfish

(and more!)

Sawfish, also known as carpenter sharks, are of the rays family and characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged so as to resemble a saw.

Video by Snake Artist – Published on Nov 10, 2013

 Weird Things About Sawfish – #1 Sawfish do not have normal bones.

5 Weird Things About SawfishWeird Things About Sawfish – #2  Rows of Teeth are Modified Scales

  • The sawfish’s most distinctive feature is the saw-like rostrum, covered with electrosensitive pores that allow the sawfish to detect slight movements of prey hiding in the muddy sea floor. The rostrum also serves as a digging tool to unearth buried crustaceans.  Should suitable prey try to swim past, the normally lethargic sawfish springs from the bottom and slashes at it with its saw. This generally stuns or impales the prey sufficiently for the sawfish to devour it. Sawfish also defend themselves with their rostrum against intruding divers and predators such as sharks. The “teeth” protruding from the rostrum are not real teeth, but modified tooth-like structures called denticles.

Weird Things About Sawfish – #3  Grow up to 20 feet long, known  to grow over 25 feet

  • The smallest sawfish is the dwarf sawfish (P. clavata), which grows to 1.4 m (4.6 ft), much smaller than the others. The largest species seem to be the large-tooth sawfish (P. microdon), the Leichhardt’s sawfish (P. perotteti), and the common sawfish (P. pristis), which can all reach about 7 m (23 ft) in length.

5 Weird Things About Sawfish

Weird Things About Sawfish – #4  Sawfish are ovovivipparous

  • Instead of laying eggs, the eggs stay inside of body and hatch inside and are born live.  The live pups bear rostral blades that are soft and flexible during embryonic development, with teeth that are enclosed by a sheath – so as to protect the mother during the birthing process – which eventually disintegrates and falls off.

Weird Things About Sawfish – #5  Population declining, 95% wiped out

  • Sawfish are listed as Endangered or Critically Endangered by the IUCN, and face the threat of extinction as a result of habitat loss and overfishing.  Global populations of every species of sawfish are estimated to have fallen to less than 10% of their historic levels.  International commerce of sawfishes has been banned globally since 2007, with the only exception being for the provision of live Pristis microdon to appropriate public aquaria for primarily conservation purposes.

5 Weird Things About Sawfish

More Weird Things About Sawfish

  •  The body and head of a sawfish are flat, and they spend most of their time lying on the sea floor.  The sawfish’s mouth and nostrils are on its flat underside. The mouth is lined with small, dome-shaped teeth for eating small fish and crustaceans.  Sawfish breathe with two spiracles just behind the eyes that draw water to the gills.
  • The eyes of the sawfish are underdeveloped due to their muddy habitats. The rostrum is the main sensory device.
  • Their small intestines contain an internal partition shaped like a corkscrew, called a spiral valve, which increases the surface area available for food absorption.
  • One southern sawfish was recorded as weighing 2,455 kg (5,412 lb).  Such massive specimens that survive long enough to approach their maximum size and age are believed to have lifespans of about 51 years.

5 Weird Things About Sawfish

Distribution and habitat

  • Sawfishes are marine, and move between freshwater and saltwater, brackish water.
  • Species and are widely distributed in the Atlantic and Indo-Pacific.
  • Juveniles are common in very shallow waters, but adults can be found at depths of 40 m (130 ft) or more.

Behavior

  • Sawfishes are nocturnal usually sleeping during the day and hunting at night.
  • They do not attack people unless provoked or surprised.

Reproduction

  • Sawfish are known to mate once every two years, with an average litter of around eight.
  • It is estimated that the larger species do not reach sexual maturity until they are 3.5 to 4 m (11 to 13 ft) long and 10 to 12 years old.

Rob Griffith / AP

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I hope you have enjoyed, “5 Weird Things About Sawfish

You might also like to read, Diver Loses Thumb Feeding Moray Eels, Not for the Squeamish

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Born in Nova Scotia, I moved to the United States 20+ years ago.I am a dedicated lover of animals and fight for their rights and protection.I love people too, of course, and enjoy meeting folks from all walks of life.I enjoy philosophical discussion, laughing, and really odd ball stuff.I hope you enjoy my site.Leave me a comment to let me know you were here!Peace out.
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31 thoughts on “5 Weird Things About Sawfish, Sawfish Images and Video

  1. This was very interesting. I’ve always thought that sawfish look like a fake fish! I didn’t know hardly any of what you shared above, including the “denticles” ~ I like these kinds of articles! Thanks!

  2. This is so fascinating and informative! I love learning about all the creatures in the ocean. It boggles to my mind to imagine what is out there and love the mystery of it!

    • That’s true, Tammy. It does boggle the mind to imagine all that is out there. That’s why I keep searching for things to share. Thank you so much for visiting my blog today. Come again, okay?

  3. Well, if I saw one of these while snorkeling, you’d find me swimming the other way. They sort of look like a stingray with a nasty snout. Thanks for all of the information.

  4. Thank you very much for sharing and posting this. My eight yr old loves sharks and always watches them on TV. I find it remarkable that they have a life span of 51 yrs.This is my favorite shark but you really have to see them at the aquarium to see how massive they are and appreciate them like we did. Thank for the facts,boys and I had fun reading it together.

    • Yes, it is amazing that they can live so long, isn’t it? Wow. I’m glad you and your boys had fun reading this together, and that you got to see a real one. That’s cool. 🙂 Thanks for commenting.

  5. Thank you for sharing this facts about them. I’ve seen one or two via the aquariums we’ve visited and I always think to myself, this is one fish I don’t want to encounter ever. Little did I know that they do not attack (unless you surprise them, why would you anyway?!). It’s just the saw portion of its body creates fear immediately.
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  6. I like reading about animals especially the ones i have never had in dept knowledge. i dint know most of the things like their population is declining up to 95% are wiped out which is so huge. that really shows to what extent we r preserving our water animals.

    • Thank you for your comment, Alpa. I’m glad you enjoyed my post. Yes, mankind has not been so kind after all, to the animal kingdom. So many animals are endangered or extinct now. It’s a shame.

  7. I didn’t know all of these facts about sawfish. In general I like information about fish in fresh water that are normally in salt water. I really like watching River Monsters. I like information about moths and butterflies also.

  8. My 6-year-old is gonna go nuts when I show him this post! He’s recently taken an interest in sharks and predatory fish, he’ll have these 5 weird facts memorized in no time!

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