Shorefishes of the Tropical Eastern Pacific Online Information System
Updated: 06/12/2008  

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Heterodontiformes  -  Heterodontidae  -  Heterodontus  -  Heterodontus quoyi

Heterodontus quoyi

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low crest over eye
body spots > 1/2 eye

no light bar between eyes
D1 origin behind pectoral base, over internal margin



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.

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