Spiny Dogfish and Similar Species
Squalus acanthias
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Open the appSeveral fish can be confused with Spiny Dogfish. Here are the key differences.
Species often confused with {name}
Blackspotted Smooth-hound
Mustelus mento
Key differences: Lacks dorsal spines and has an anal fin. Body is generally more robust and often has distinct black spots.
Starry Smooth-hound
Mustelus asterias
Key differences: Lacks dorsal spines and has an anal fin. Characterized by numerous small white spots on its dorsal surface, but these are not associated with spines.
Other Dogfish Sharks (e.g., Squalus cubensis, Squalus megalops)
Various Squalus species
Key differences: Distinguished by subtle morphological differences, such as spine length, fin shape, and vertebral counts. S. acanthias typically has more prominent white spots (especially when young) and a more northern distribution for its primary populations.
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