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Galapagos bullhead shark (Heterodontus quoyi) fish species and information / pictures of Galapagos bullhead shark - Heterodontus quoyi

Galapagos bullhead shark (Heterodontus quoyi) fish species information

Scientific Name
Heterodontus quoyi

Common Name
Galapagos bullhead shark

Biology
Inhabits sand flat and rocky, boulder strewn reef areas, with sand between outcroppings in inshore continental and insular waters. Rests motionless on the bottom. Is docile, non-aggressive and a poor swimmer (Ref. 5227). Nocturnal (Ref. 43278). Feeds on shellfish, crabs, and small invertebrates (Ref. 28023). Oviparous (Ref. 50449). Size at birth (for a newly hatched male) is 17 cm.

Classification

Classified By
Fr?minville, 1840
Class
Sharks and Rays (Elasmobranchii)
Order
Bullhead and Horn sharks (Heterodontiformes)
Family
Bullhead / horn / Port Jackson sharks (Heterodontidae)

Distribution

Region
Eastern Pacific
Distribution
Eastern Pacific: Peru (including offshore islands) and the Galapagos Islands. There might be another Heterodontus species from Peru which is Heterodontus peruanus, but these two cannot be separated as of this time for lack of materials examined.
Range
0°S - 10°S, 90°W - 71°W

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
3 m
Depth To - meters
40 m
Zone
reef-associated
Environment
Marine; reef-associated; depth range 3 - 40 m (Ref. 5227), usually 16 - 30 m (Ref. 54549)
Trophic Level
3.54 s.e. 0.50 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
True
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
107 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.5059 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: of no interest
Vulnerability
High vulnerability (62 of 100)
Resilience
Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be
Threat To Humans
  Traumatogenic
IUCN Red List Status
  Data deficient (DD)