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Galapagos Bullhead Shark
Threat Level: Low
The Galapagos Bullhead
Shark is also known as Horn Shark.
- GALAPAGOS BULLHEAD
Scientific Name.... Heterodontus
Family Name...... Hetrodontidae
- General Information: It has been suggested
that there may be more than one species included under ( Heterodontus
Quoyi ), but there has been little research done to confirm this. The
supraorbital ridges of this species are low, dorsal fins with
spines, the first dorsal origin is behind the pectoral fin base. Anal
fin present. They are a very docile non-aggressive shark with little
research done on this species.
- Size: The galapagos bullhead shark grows to
a maximum length of 22.5 inches.
- Teeth: The anterior teeth have a cusp and a
pair of cusplets in adults, posterior molariform teeth are strongly
ridged, but not greatly expanded and rounded.
- Color: Background color of the dorsal surface
is light gray or brown with large black spots greater than half
eye diameter, no dark harness pattern; the head is without a light-coloured
bar on interorbital surface and with mottled dark spots or blotches
under the eyes. The fins are without abrupt dark tips and white
dorsal-fin apices; hatchlings without whorls on fins and body
and similar in coloration to adults.
- Feeding Habits: Galapagos bullhead sharks are
nocturnal, feeds on crabs, shellfish, and small invertebrates.
- Social Behaviour: This species is usually observed
- Habitat | Migration | Distribution: They are
found in Peru ( including offshore islands ) and the Galapagos
Islands. Inhabits sand flat and rocky, boulder strewn reef areas,
with sand between outcroppings in inshore continental and insular
waters. Rests motionless on the bottom.
- Reproduction: Galapagos bullhead sharks are
- Swimming: They are known to be a poor swimmer.
- Galapagos Bullhead Shark Attacks: Harmless
, not aggressive
- Population Report: Unknown.
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