Summary ²

The spiny dogfish, spurdog, mud shark, or piked dogfish (Squalus acanthias) is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. While these common names may apply to several species, Squalus acanthias is distinguished by having two spines (one anterior to each dorsal fin) and lacks an anal fin. It is found mostly in shallow waters and further offshore in most parts of the world,...

Sources and Credits

1. (c) Guido Schmitz, some rights reserved (CC BY-NC), uploaded by Guido Schmitz
2. (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Squalus_acanthias

More Info

• iNat taxon page
• Animal Diversity Web
• Biodiversity Heritage Library
• BOLD Systems BIN search
• FishBase
• Global Biodiversity Information Facility (GBIF)
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• NBN Atlas
• VertNet
• World Register of Marine Species

iNat Map