Angler Fish

By Claudia Giblin

Angler fish aquatic environment is classified as earth's most inhospitable habitat. They live in waters 914m deep, making the water is near freezing cold and causing darkness to surrounds them. It is a lonely, lightless bottom of the sea.  Angler fish are found all over the world and as result of this there are five hundred different species.  

Reproduction

One of the biggest difference between the male and the female angler fish is appearance. Female are more commonly know to us with their specialized spine to hunt for pray or their appearance in finding nemo, but for males it is a different story. Males are at least 10 times smaller then the female angler fish and they find it very hard to find food. Males live hungry most of their life, untill they find a female.

The reproductive system in the angler fish is one of the most unusual in any fish.  After male angler fish are matured there digestive system begins to break down meaning to is vital to find a female for survival. Once they find a female they latch themselves onto then with there hook like teeth. As this is happening the males will release a enzyme which will break down the shin so he can join in. Eventually their blood vesels will combine and the female will consume the male. after this the male reaches sexual maturity, giving him larger  From this the male receives all the nutrients needed for the rest of his life. This amazing method of reproduction helps to ensure that when the female is ready to reproduce she has a mate instantly available.

Sperm from the male is released through the mouth and into the females blood stream. The sprem will them travel through her body to find an egg to fertilised. After this the female lays her eggs on thin material called gelatious which protects the eggs. The amount of eggs produced varies from the species, but in some cause there could be one million. Put together the sheet and eggs are usually one metre wide and nine metres long. These eggs then later hatch into larvae meaning the anglerfish oviparity reproducers. These larvae swim to the top of the ocean to feed on plankton. Once they have become big enough they make the long swim back to the bottom of the sea, where they will stay for the rest of there life.  

Parental Care

Once an anglerfish has lay her eggs the eggs protected by the gelatinous layer float alone through the sea. This is a risky move as it is a unstable environment.  Anglerfish are not protected making them an easy food source. As anglerfish lay up to one million eggs they use little energy taking care of them and many offspring's are produced. Anglerfish all reach maturity quite early and all of this puts anglerfish under the R-selection of parental care.

Bibliography

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Bora, Chandramita. Buzzle.com. Buzzle.com, 30 Apr. 2010. Web.
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