Shortspine Spurdog

About the Shortspine Spurdog

The shortspine spurdog is a dogfish species found around the world on continental shelves in temperate and subtropical oceans, at depths of 0 to 950 m.

These sharks have smooth spines on their dorsal fins. They usually grow up to 76 cm in length. Since they’re so widespread, they have several separate populations that mature at different rates. The Japanese population grows the largest, with females often reaching 125 cm in length. They can live up to 27 years.

Since the populations are fragmented, it’s possible that they have become separate species. This uncertainty makes it impossible to determine population health. They’re currently considered data deficient.

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Scientific Name Squalus mitsukurii
OrderDog and Angelfish Sharks - Squaliformes
GenusSqualus
CitesNot Listed
IUCNData Deficient
ReproductionOvoviviparous
SizeSmall
Litter Size 4-9
Common Length 76.0 cm
Max Lenght125 cm
Depth Range0 - 950 m
DistributionWestern Central Atlantic, Northwest Atlantic, Southwest Atlantic, Eastern Central Atlantic, Northeast Atlantic, Eastern Indian Ocean, Western Indian Ocean, Southwest Pacific, Western Central Pacific, Northwest Pacific
EnvironmentBenthopelagic
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