| Common names: shark (English), dormilón (Espanol), tiburón (Espanol) |
Heterodontus quoyi (Fréminville, 1840)
Galapagos bullhead shark
A slender-bodied shark with a large squarish pig-lke snout; low bony ridge above each eye ends gradually at rear; nostrils without barbels, with grooves around nostrils and connected to the mouth; anterior nasal flaps elongate posteriorly; small mouth; front teeth with 3 similar sized points, enlarged molariform teeth posteriorly; both dorsal fins with a sharp spine; origin of first dorsal fin behind pectoral fin base, over inner fin margin.
Grey or light brown with large (> ½ eye diameter) blackish leopard- like spotting; no pale bar between eyes; dark spots or blotches under eye; a series of diffuse dark grey bars may be present across back and sides.
Size: reaches 107 cm.
Habitat: often seen resting on sand adjacent to rocky reefs.
Depth: 3-40 m.
Galapagos Islands and Ecuador to Peru.
Global Endemism: All species, East Pacific endemic, TEP non-endemic
Regional Endemism: All species, Tropical Eastern Pacific (TEP) non-endemic, Temperate Eastern Pacific, primarily, Peruvian province, primarily, Continent + Island (s), Continent, Island (s)
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo), South Temperate (Peruvian Province )
Catalog Number: USNM 77691
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): R. Coker
Locality: Lobos De Tierra, Lobos de Tierra Island, Peru, Pacific
- Type: Evermann, B. W. & Radcliffe, L. 1917. Bulletin of the United States National Museum. No. 95: 2, fig 1.; pl. 1.
Inshore/Offshore: Inshore, Inshore Only
Water Column Position: Bottom, Bottom only
Habitat: Reef (rock &/or coral), Rocks, Reef and soft bottom, Reef associated (reef + edges-water column & soft bottom), Soft bottom (mud, sand,gravel, beach, estuary & mangrove), Sand & gravel
FishBase Habitat: Reef Associated
From 3 to 40 meters.
Diet: mobile benthic crustacea (shrimps/crabs), mobile benthic gastropods/bivalves, sea-stars/cucumbers/urchins, bony fishes
Life History and Behavior
CITES: Not listed
Relevance to Humans and Ecosystems
Galapagos bullhead shark
The Galapagos bullhead shark, Heterodontus quoyi, is a bullhead shark of the family Heterodontidae. It is found in the tropical eastern Pacific Ocean between latitudes 0° to 10° S, at depths between 3 and 40 m. It can reach a length of 1.07 m.
The reproduction of this bullhead shark is oviparous.
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