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- Horn_shark abstract "The horn shark (Heterodontus francisci) is a species of bullhead shark, family Heterodontidae. It is endemic to the coastal waters off the western coast of North America, from California to the Gulf of California. Young sharks are segregated spatially from the adults, with the former preferring deeper sandy flats and the latter preferring shallower rocky reefs or algal beds. A small species typically measuring 1 m (3.3 ft) in length, the horn shark can be recognized by a short, blunt head with ridges over its eyes, two high dorsal fins with large spines, and a brown or gray coloration with many small dark spots.Slow-moving, generally solitary predators, horn sharks hunt at night inside small home ranges and retreat to a favored shelter during the day. Their daily activity cycles are controlled by environmental light levels. Adult sharks prey mainly on hard-shelled molluscs, echinoderms, and crustaceans, which they crush between powerful jaws and molar-like teeth, while also feeding opportunistically on a wide variety of other invertebrates and small bony fishes. Juveniles prefer softer-bodied prey such as polychaete worms and sea anemones. The shark extracts its prey from the substrate using suction and, if necessary, levering motions with its body. Reproduction is oviparous, with females laying up to 24 eggs from February to April. After laying, the female picks up the auger-shaped egg cases and wedges them into crevices to protect them from predators.Horn sharks are harmless unless harassed, and are readily maintained in captivity. They are not targeted by either commercial or recreational fisheries, though small numbers are caught as bycatch. In Mexico this species is used for food and fishmeal, and in California its spines are made into jewelry. The International Union for Conservation of Nature (IUCN) does not yet have enough information to determine the horn shark's conservation status. It faces few threats off the coast of the United States.".
- Horn_shark binomialAuthority Charles_Fr%C3%A9d%C3%A9ric_Girard.
- Horn_shark class Chondrichthyes.
- Horn_shark class Elasmobranchii.
- Horn_shark conservationStatus "DD".
- Horn_shark conservationStatusSystem "IUCN3.1".
- Horn_shark family Bullhead_shark.
- Horn_shark genus Bullhead_shark.
- Horn_shark kingdom Animal.
- Horn_shark order Bullhead_shark.
- Horn_shark phylum Chordate.
- Horn_shark synonym "Cestracion francisci (Girard, 1855)".
- Horn_shark thumbnail Heterodontus_francisci_catalina.jpg?width=300.
- Horn_shark wikiPageExternalLink speciesSummary.php?ID=739.
- Horn_shark wikiPageExternalLink kelp-horn_shark.htm.
- Horn_shark wikiPageExternalLink HornShark.html.
- Horn_shark wikiPageExternalLink 0.
- Horn_shark wikiPageID "4951835".
- Horn_shark wikiPageRevisionID "602039191".
- Horn_shark binomial "Heterodontus francisci".
- Horn_shark classis Chondrichthyes.
- Horn_shark familia Bullhead_shark.
- Horn_shark genus "Heterodontus".
- Horn_shark hasPhotoCollection Horn_shark.
- Horn_shark name "Horn shark".
- Horn_shark ordo Bullhead_shark.
- Horn_shark phylum Chordate.
- Horn_shark rangeMap "Heterodontus francisci distmap.png".
- Horn_shark rangeMapCaption "Range of the horn shark".
- Horn_shark rangeMapWidth "200".
- Horn_shark regnum Animal.
- Horn_shark species "H. francisci".
- Horn_shark status "DD".
- Horn_shark statusSystem "IUCN3.1".
- Horn_shark subclassis Elasmobranchii.
- Horn_shark synonyms "Cestracion francisci (Girard, 1855)".
- Horn_shark trend "stable".
- Horn_shark subject Category:Animals_described_in_1855.
- Horn_shark subject Category:Fish_of_the_Gulf_of_California.
- Horn_shark subject Category:Heterodontidae.
- Horn_shark subject Category:Western_North_American_coastal_fauna.
- Horn_shark type Animal100015388.
- Horn_shark type AnimalsDescribedIn1855.
- Horn_shark type LivingThing100004258.
- Horn_shark type Object100002684.
- Horn_shark type Organism100004475.
- Horn_shark type PhysicalEntity100001930.
- Horn_shark type Whole100003553.
- Horn_shark type Animal.
- Horn_shark type Eukaryote.
- Horn_shark type Fish.
- Horn_shark type Species.
- Horn_shark type Animal.
- Horn_shark type Fish.
- Horn_shark type Organism.
- Horn_shark comment "The horn shark (Heterodontus francisci) is a species of bullhead shark, family Heterodontidae. It is endemic to the coastal waters off the western coast of North America, from California to the Gulf of California. Young sharks are segregated spatially from the adults, with the former preferring deeper sandy flats and the latter preferring shallower rocky reefs or algal beds.".
- Horn_shark label "Californische stierkophaai".
- Horn_shark label "Heterodontus francisci".
- Horn_shark label "Heterodontus francisci".
- Horn_shark label "Heterodontus francisci".
- Horn_shark label "Horn shark".
- Horn_shark label "Hornhai".
- Horn_shark label "Requin dormeur cornu".
- Horn_shark label "Калифорнийская бычья акула".
- Horn_shark label "佛氏虎鯊".
- Horn_shark sameAs Hornhai.
- Horn_shark sameAs Κερασφόρος_καρχαρίας.
- Horn_shark sameAs Heterodontus_francisci.
- Horn_shark sameAs Requin_dormeur_cornu.
- Horn_shark sameAs Heterodontus_francisci.
- Horn_shark sameAs Californische_stierkophaai.
- Horn_shark sameAs Heterodontus_francisci.
- Horn_shark sameAs m.0cwsnf.
- Horn_shark sameAs Q934615.
- Horn_shark sameAs Q934615.
- Horn_shark sameAs Horn_shark.
- Horn_shark wasDerivedFrom Horn_shark?oldid=602039191.
- Horn_shark depiction Heterodontus_francisci_catalina.jpg.
- Horn_shark isPrimaryTopicOf Horn_shark.
- Horn_shark name "Horn shark".
