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Earth Science Project

John Bell

on 3 April 2011

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Transcript of Hatchetfish

HATCHETFISH By John Bell, IV Argyropelecus gigas DEEP SEA The deep sea hatchetfish is a fish with a range from 600 to 4,500 feet. Its name comes from its hatchet-shaped body. It has bioluminescent strips, called photophores, running along its body. the deep sea hatchetfish is about six inches long. Physical Characteristics Fish Food Plankton Viperfish Not much is known about the deep sea hatchetfish. However, it is known that its prey often includes plankton and smaller fish. Its predators include the viperfish and the lancetfish. Bioluminescence and Eyesight Deep sea hatchetfish have bioluminescent strips running along their undersides, which are for confusing predators. Since there is always a faint light coming from above, the underside light strips adjust to match the light. This serves as camouflage from predators. Deep sea hatchetfish also have extremely large eyes. This adaptation allows the hatchetfish to search for the faint shadows of food above. FAMILY TIME All in the (sub) Diaphanous Hatchetfish Threelight Hatchetfish Atlantic Silver Hatchetfish The hatchetfish subfamily, Sternoptychinae, includes 43 different species. These include the deep-sea (or giant), the atlantic silver, threelight, and diaphanous hatchetfishes. Bibliography Bioluminescence: Photogenic Organ of a Hatchetfish. Art. Encyclopedia - Britannica Online Encyclopedia. Encyclopædia Britannica, Inc. Web. 02 Apr. 2011. .
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