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| Dogfish Squalus | Dogfishes Sharks of the family Squalidae. The subfamily Squalinae are called dogfish sharks and comprise eight genera with about 44 species. Dogfish often appear in schools near shore and are destructive to fish and fishing gear. Their liver is valued for its oil and its flesh is often made into fertilizer. The Squalus acanthias or spiny dogfish figures heavily in biological research, especially with reference to its rectal gland in water-electrolyte studies. |