Knowledge Matrix on Instagram: "The viper dogfish is a rare deep sea shark from the lantern shark family. Its scientific name is Trigonognathus kabeyai and it lives in the northwestern Pacific near Japan, Taiwan, and Hawaii. It grows up to 54 centimeters and has a black slender body with spined dorsal fins and light producing organs on its belly. Its jaws are long and triangular with outward pointing fang like teeth. They can shoot forward to impale prey which the shark swallows whole. It feeds