dog·fish / ˈdôgˌfish/ •
n. (pl. same or -fishes) 1. a small sand-colored, long-tailed bottom-dwelling shark (Scyliorhinus canicula, family Scyliorhinidae). 2. a small shark that resembles or is related to the dogfish, esp. of the families Scyliorhinidae, Squalidae, and Triakidae.
found in marine waters worldwide. Generally greyish with white spots, it lacks a lower tail lobe. Eggs are laid in cases (mermaids' purses). Dogfish are divided into two groups: spiny, with a stout, sharp spine in front of each dorsal fin; and spineless, without a spine in front of the second dorsal fin. A food fish, they are sold as rock salmon. Length: spiny, 0.6–1.2m (2–4ft); spineless, 7.3m (24ft). Suborder Squalidae.
A cartilaginous fish
, Scilliorinus caniculum
, or Squalis acanthias
, a small shark; sometimes called rock salmon or rock eel.