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Top 15 Seahorse Facts


Posted January 21, 2012 by

Seahorses are certainly a peculiar genus of fish.  While there are many interesting seahorse facts, this article focuses on what I consider to be the top 15 most interesting seahorse facts.  So without further ado, here we go!

  1. There are seahorse species that are smaller than 1 inch long when fully grown (Pygmy Seahorse).
  2. Seahorses are the slowest fish in the ocean, according to Guinness World Records.  The Dwarf Seahorse moves at under 5 feet per hour.  Some seahorses move even slower.  And you thought snails were slow!
  3. They change color whenever they are stressed.  They can drastically change colors in order to camouflage themselves into their environment.
  4. Seahorses do not have scales like most other fish, they just have skin.
  5. Courting behavior is commonly observed in seahorses.  A male will often court a female for days before potentially mating.
  6. As part of the courting ritual, the male will dance around and shoot jets of water through his pouch to show it is empty.
  7. During courting, seahorses will often link up by curling their tails around each other.  They will float around, linked at their tails, for hours at a time.
  8. Seahorse pregnancy is probably one of the most interesting seahorse facts out there.  The male seahorses get pregnant, not the females.  How does this work?  The female uses an ovipositor to expel her eggs into the male’s stomach pouch.
  9. Male seahorses fertilize the eggs after they are deposited into his pouch.  They release their sperm into the surrounding water, which makes in its way to the eggs inside his pouch.
  10. During pregnancy, male seahorses produce some of the same hormones that pregnant mammal females do.
  11. A common misconception is that seahorses are monogamous for life.  This usually isn’t true.  What is true is that seahorses will often stay with the same mate throughout an entire breeding season.
  12. Declining seahorse populations can largely be attributed to Asian medicinal beliefs.  Many Asian nations use seahorses as part of an herbal medicine regimen.
  13. When at rest, seahorses curl their tail around coral or seaweed so they don’t float away.
  14. Less than 1% of seahorse eggs develop into mature seahorses.
  15. Seahorses make clicking sounds when eating and when interacting with other seahorses.

There you have it.  The top 15 seahorse facts (in my opinion).  I hope you enjoyed the read, and if you have any seahorse facts to add, please be sure to comment below!

Check out this awesome video of a male seahorse giving birth!


Corey is the primary author and editor on Critterhub. With over 20 years of pet care experience, his interests lie mostly in aquaria and herpetology. Corey has a degree in Biology, and has completed many research projects involving herpetology and other animals.



    Very good article! Lots of useful facts. Kind of sad that they don’t mate for life though, I really liked that idea about them. Too bad it’s just not true.
    I can remember when I was small, (some 40+ years ago) my grandmother used to order them out of ads in the back of magazines. They were really cheap then and I remember she kept them in fishbowls..for awhile. They didn’t live long and they were such a novelty but their needs and real care level was not passed on to the consumer….
    l have been thinking of starting a tank just for seahorses. I think they are so interesting to watch. I have been lucky in saltwater/reef tanks…Hope my luck follows this new interest. If I do, maybe I will blog my experience.
    Thankyou for your article. It has resparked an old interest of mine.


    thanks for the info this is what i needed for my research!!!!!!!!!!! :)


    I’ve been wondering about that video at the end of your article, do most seahorses give birth to so many young? How many usually survive? Just curious!

    Great read.. considering adding a couple of seahorses to my tank 😀


      Hi Abrianna,

      Most seahorses species will have between 75-250 young per clutch. Keeping seahorses isn’t as daunting as some sources would have you believe. If you are an experienced aquarist and can offer them the conditions they require, I say go for it!


    terima kasih banyak. thank you so much . lucky me. this is what i really really need for my research :)

    anayeli (anna yell ie)

    ok so i doin a project on evolution and mine is a seahorse in a swamp we have to change the animal to make it suvive DUE: tuesday 2/26/13

    anayeli (anna yell ie)

    any tips



    Great info. ..I’ve always loved this sea creature…I actually have a
    Birth mark in the exact shape of one on my left leg. They truly amaze me.
    Ty for a great read!


    wow! this website gives alot of information and this video is fantastico!:)LOL


    hey guy i need to know about seahorse so yeah….


    Thanks so much. Helped me with my seahorse project. Making an awesome tri fold board!

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