spotted ratfish

Scientific name Hydrolagus colliei
Descriptor Lay& Bennett
Year of description 1839
IUCN category LC
Family Chimaeridae
Genus Hydrolagus
Hydrolagus colliei Hydrolagus colliei


Hydrolagus colliei, commonly known as spotted ratfish, is a salt water fish from the Océan Pacifique nord-est tempéré froid.

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Who is it?


  • Average size
    80 cm
  • Maximum size
    100 cm
  • Pattern
  • Average size
    80 cm
  • Maximum size
    100 cm
  • Pattern

How to recognize the spotted ratfish ?

The spotted ratfish measures between 80 and 100 cm. This fish is bicolore with a predominantly marron body. The also has blanc ponctuations.

Behaviour & Life cycle

  • diet
  • Sociability
    living in a group or alone
  • territorial
  • Way of living

The spotted ratfish is a fish living in a group or alone naturally found on the bottom. This species is carnivorous .

Although the spotted ratfish is non-territorial, it is sometimes aggressive towards other species.


  • Reproduction

The spotted ratfish is a fish ovipare.

Risks for humans

  • Venomous
  • Bite
  • Cut

This species can attack if it feels threatened. It is important to be particularly vigilant especially during dives or fishing sessions.

Where to find it?

Where to see this species?

What is its habitat?

Natural environment characteristics

  • Temperature
    5 - 10 °C
  • Depth
    50 - 1000 m
  • Flow

Biotope presentation

The spotted ratfish is most often found at a depth between 50m and 1000m. However, it is not impossible to find this species at other depths.

To go further

To read on the web

Sources & Contributions

Participation & Validation

The Fishipedia team and specialist contributors are committed to providing high-quality content. However, although the information comes from scientific sources or testimonials from specialists, the cards may contain inaccuracies.

Benoit Chartrer

Benoit Chartrer


Translation done with the valuable contribution of our translators, who make this information available to a wider audience. We sincerely thank them for their commitment.

Bibliographic references

Reproductive biology of the chimaeroid fish Hydrolagus colliei from the eastern North Pacific Ocean. - D. A. Ebert - P. D. Cowley - L. J. Compagno - Marine Biology - 2008.

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Where to see this species?

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