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Spotted Ratfish

12/5/2016

 
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The Spotted Ratfish (Hydrolagus colliei) is one of 36 species of shortnose chimaeras (learn more about the different families of chimaeras here), getting its common name from its long, thin tail which resembles that of a rat. The Spotted Ratfish is normally found swimming near the seafloor below depths of 330 ft (100 m) during the day, yet at night it has been observed at shallower depths.
The Spotted Ratfish eats a variety of benthic invertebrates and fishes, crushing them with its strong tooth plates. Hydrolagus colliei are also prey, with predators including larger sharks and large bony fishes. They reproduce via internal fertilization; males have a head clasper, although its purpose is not yet known. After reproduction, females lay egg cases which are later deposited on the seafloor. 

It is believed that Spotted Ratfish populations to be stable, and are therefore a species of Least Concern (LC).  

ever heard of the spotted ratfish?

glossary

  • Benthic zone: The bottom of an ocean or lake.
  • Claspers: Sexual reproduction organs found on male elasmobranchs and chimaeras.
  • IUCN: International Union for Conservation of Nature.

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    Author

    TFUI Founder Melissa C. Marquez is author of all animal bios and "Behind the Fins" segments.
    ​
    A proud #LatinainSTEM, Marquez is a marine biologist who focuses on shark habitat use and movements; she is also a science communicator (follow her on Twitter) who focuses on diverse Chondrichthyan education and who focuses on the media coverage of sharks.
    You can learn more about her on her website.

    SEE MELISSA'S TEDx TALK HERE:
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  • About TFUI
    • TFUI Origins >
      • About TFUI Founder Melissa
      • TFUI Officers
    • Take a Bite
    • Get Involved
    • FAQ
  • Bite Blog
  • Education
    • The Sharks >
      • Shark Anatomy
    • The Skates & Rays
    • The Chimaeras
    • Why Environments Matter
    • The Threats
    • Open Access >
      • Behind the Fins: Interview series
      • Bite into Research
      • Shark Bites: Book Recommendations
      • Sustainable Seafood Apps
  • Fins United
    • Shark Party Ideas
    • Little Fins Nursery
    • Big Fins Reef
  • Contact