Deutsche Seiten  
 Home  Preservation  Information  Foundation  Projects  Exhibit *  Database  Galleries  Links  Shark Info 
 * Search   Distribution   Phylogenetic Tree   Orders   Red List   Endangered Sharks  Sitemap  Sitemap 

 Horn shark (Heterodontus francisci)

> Photo
> Range Map
> Systematics
> Name
> Appearance
> Coloration
> Distribution
> Biology
> Feeding
> Size
> Reproduction
> Similar Species
> Endangerment
> Danger to Humans


Horn shark
 Range Map

Earth Map


Phylum: Vertebates (Chordata)

Class: Carlilagenous Fishes (Chondrichthyes)
  Order: Bullhead sharks (Heterodontiformes)
    Family: Bullhead sharks (Heterodontidae)
      Genus: Heterodontus (Heterodontus)


Scientific: Heterodontus francisci
German: Hornhai
English: Horn shark
French: Requin dormeur cornu
Spanish: Dormilon cornudo


Cylindrical trunk. Head slightly elevated. Spiracles present, behind and below the eyes. Suborbital ridges are moderately high. Both dorsal fins with a stount spine. Origin of first dorsal fin over pectoral fin bases. Anal fin present.


Grey to light brown, with scattered small spots on fins and body. No further conspicuous markings.


Eastern Pacific: Central California to Gulf of California. Possibly around Ecuador and Peru.


Lives mostly close to the surface (2m to 11m water depth), down to maximum 150 m. Prefers stony and sandy bottoms, and kelp forests. Nocturnal, mostly solitary. When they move on the bottom they can use their pectorals to move forward. Sluggish, during daytime mainly motionless on the bottom with the head stuck in a crevice. It seems that their activity span is correlated to the light intensity.


Benthic invertebrates, mostly sea urchins, crabs and possibly abalone (bivalve).


Average size between 70 cm and 90 cm, maximum total length about 120 cm.


Egg laying (oviparous). It has been observed (in aquaria) that the egg deposition starts about 2 weeks after the mating event and lasts a period of about 4 months. During that time 2 eggs are laid at the same time, within a 2 week interval. Pups hatch after 7 to 9 months, size at birth is about 15 cm. Males reach sexual maturity at a minimum length of about 60 cm.

 Similar Species

Mexican hornshark but the dots on the Mexican hornshark are much bigger and the suborbital ridges are less dominant.


Status in the IUCN Red List:

No Entry found in Red List.

 Danger to Humans


 ^  Top |  Home  Preservation  Information  Foundation  Projects  Exhibit *  Database  Galleries  Links  Shark Info 
© 2018 - 2018 Shark Foundation / Hai-Stiftung Last updated: 18/10/03 10:54 / Webmaster