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Lantern Fish

species light organs flashing

Light plays a vital role in the life of all oceans. At the simplest level, it provides one of the basic requirements for photosynthesis and promotes development of a food chain. Some species of fish that live in the darker reaches of the oceans also rely on light for survival. Some of these species, such as lantern fish, have even developed their own artificial means of generating light.

Lantern fish are so called on account of the special light-producing organs that are found in their skin. Each light organ, known as a photophore, is connected to the animal's nervous system which, perhaps together with some form of hormonal control, dictates the flashing sequence of these organs. In addition to a series of rows of light-producing organs along their sides (the pattern and number of which varies according to species), some lantern fish, such as those of the genus Diaphus, also have larger organs both in front of and underneath the eyes, rather like a miner's lamp. The former organs give off a twinkling effect as the animals swim, while the latter are far more powerful, effectively lighting up the area immediately ahead of the fish. Some species even have light organs on their tails; the purpose of these is probably to act as false lures to potential predators. The eyes themselves are large with large lenses and pupils and highly sensitive retinas, suggesting that vision is an important sense for these species.

Lantern fish (family Myctophidae) are one of the most important groups of midwater fishes, with some 250-300 species known. Most are small fish, measuring from 0.8-10.4 in (2-15 cm) in length. They are commonly found in large schools. Living at depths between 655-3,280 ft (200-1,000 m), these species undergo nightly migrations to the surface to feed, descending once again to the depths during the day. One explanation for this behavior is that vast quantities of tiny plankton rise to the surface of the ocean at night; species that feed on this rich food source, such as the lantern fish, therefore gain from having a condensed source of food at such times. Lantern fish also take advantage of the fact that they are not alone in harvesting the plankton; other small species such as amphipods and krill are also consumed at such times. By retreating to the gloomy depths during the day, they may also reduce the risk of predation from larger species.

The lantern fish is able to control the intensity and frequency of its flashing lights, and it is likely that the intermittent flashing serves a dual purpose. Many smaller organisms such as krill and copepods are attracted to sources of light and, by responding to the flashes of a lantern fish, unwittingly offer themselves as a meal. Recognition and warning are two other possible functions of the flashing lights. Light-producing organs are commonly found in species inhabiting the darkest regions of the sea, where the dark water can present a problem when trying to find a mate. By detecting and responding to a certain fixed frequency of light flashes, however, a lantern fish may find a mate more easily.

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over 7 years ago

what are some intresting facts about the lanten fish i m doin a writen report in science class and i need some facts

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over 8 years ago

what is the size of a lantern fish? what do they eat? what are their characteristics ? what color are they?are they really big?

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over 9 years ago

how much does a lanternfish weigh ?

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over 9 years ago

what eats a lantern fish

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about 9 years ago

what are the lanternfishes predetors

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over 9 years ago

what eats a lantern fish?

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almost 8 years ago

how do they protect themselves from predators

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over 8 years ago

how many things can a lantern fish eat in exactly 2 seconds ? im very intrieged into the habbita of lanter fish and i think that people posting comments are a little lazy cant u just go ad look at aother website such as www.youtube.com fr videosof latern fish

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over 4 years ago

what the heck is the height of a lanternfish

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over 9 years ago

"The lanternfish are heavily preyed upon by cetaceans, including whales and dolphins; large pelagic fish such as tuna and sharks; grenadiers and other deep-sea fish (including other lanternfish); pinnipeds; sea birds, notably penguins; and large squid such as the jumbo squid" (http://en.wikipedia.org/wiki/Lanternfish)

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over 2 years ago

Lmao

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almost 2 years ago

@Drew do you have your project done?, what was your grade on it?

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about 9 years ago

what temeture of water does the lantern fish live at?

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over 4 years ago

klkfjbx.cklbnm;xlkcbxkcb

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about 9 years ago

are lantern fish coming extinedk

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over 8 years ago

Do lantern fish taste good?
What kind of texture would they have?
What would chewing it be like?
Do they have a lot of bones?
Would it be troublesome to cook one?

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over 2 years ago

what are the chemicals involve in a lantern fish in terms of bio luminescence?

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over 4 years ago

this was some bull shitty information

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about 2 years ago

http://www.situsterpercaya.com/rajapoker88-com-agen-texas-poker-dan-domino-online-indonesia-terpercaya

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about 8 years ago

how does it devlop i am 12 doing a brochere on vertebrates and one of the questions are how does it develop how does it develop

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3 months ago

no no no no no no no!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!@#$%^&*!@#$%^&*!@#$%^&@#$%^&#$%^&*