| Deep Sea Fish | | | | matter that sinks on from higher surface. These |
| | | | areas are poor in productivity. So the fishes here |
| Introduction: | | | | have jelly-like flesh and have a minimal bone |
| Deep sea fish is the term given to fishes that live | | | | structure. |
| below the photic zone of the ocean. The types of | | | | |
| deep sea fish are lantern fish, flashlight fish, cookie | | | | Adaptations |
| cuter shark, bristle mouths, anglerfish and | | | | In order to survive from the predators, they use |
| viperfish, hatchet, gulper eel and whale. The | | | | the technique of Camouflage in which they merge |
| endangered species of deep sea include blue hyke, | | | | into the surroundings. Some animals allow the light |
| spiny eel, spiny tail skate, round nose grenadier | | | | to pass through them and become transparent. |
| and onion-eye grenadier. They are on the verge | | | | Whereas the fishes that are black colored could |
| of extinction due to the shift of commercial | | | | easily escape in the darkness. These fishes live in |
| fisheries from the continental slopes to continental | | | | areas where there is no natural light available, so |
| shelves area up to 6000 meters. Another | | | | they cannot rely on the eyes for feeding and |
| contributing factor is the slow reproduction of | | | | mating. They have adapted to darkness by large |
| these fishes. | | | | eyes known as bioluminescent or feelers which |
| | | | | help them to locate their mates. |
| Habitat: | | | | |
| | | | | |
| The photic zone lies few hundred meters below | | | | Types of Deep sea fishes: |
| the water; this region is not much explored. This | | | | Lantern fish: |
| fishes are weird and most mysterious species on | | | | It accounts for 65% of all the deep sea biomass. |
| Earth. Although they have evolved in harsh | | | | Their length varies between 3cm to 35 cm and |
| climate, they don't survive in laboratory conditions | | | | has a pattern of photophores all down the body. |
| and so they are still unknown. Less amount of | | | | It swims to the top to catch the prey. These |
| research has been done about them as the | | | | fishes if are brought above to the surface they |
| expenses of equipments for exploring deep sea is | | | | cannot survive and their organs and eyes will |
| high. They are recognized by their scientific names | | | | explode. |
| as only scientists know about them. Many species | | | | |
| in the deep sea emit lights called luminescent | | | | Whales: They dive in deep sea in search of prey |
| which attracts other fish. | | | | . |
| | | | | Viperfish: It is one of the scariest fish found in |
| Apart from these they live under high pressure | | | | deep sea. It has long sharp clear teeth and light is |
| and the climate is very cold here. The water has | | | | used to catch their prey. |
| high quantity of nutrients which are obtained from | | | | |
| the accumulated wastes sinking form the high | | | | Hatchet: It possesses light that grabs the |
| level. Oxygen content in this water is high which is | | | | attention of their prey. |
| about 5-6%. | | | | |
| There is very less light reaching this surface of | | | | Gulper eels: They have a huge head and mouth to |
| the earth and so the process of photosynthesis | | | | gulp their prey easily. They have elastic stomachs |
| does not take place. They survive on the organic | | | | help them to eat large fishes. |