The black dogfish is primarily a deepwater, benthic species found throughout the continental¹ shelf. Observations of this species, which lives far beyond the range of recreational divers, are limited to by-catch by deep trawlers or other fishing apparatus. The black dogfish is sometimes confused with the Portuguese dogfish which is similar in appearance and size, but whose spines in front of each dorsal fin are smaller and less apparent.
The black dogfish and Greenland shark are the only sharks known² to inhabit the St. Lawrence year-round, all other species being seasonal visitors.
¹ NOAA Fisheries
² There are two known outlier cases of the spiny dogfish (Squalus acanthias) being caught by ice fishers in the Saguenay Fjord in winter (Gallant, J., unpublished data).
Common name: Black dogfish
French common name: Aiguillat noir
Scientific name: Centroscyllium fabricii — Centroscyllium: Greek, kentron = sting + Greek, skylla = a kind of shark.