Search results
Results From The WOW.Com Content Network
Because of being an island, Sri Lanka has many endemic freshwater fauna, as well as thousands of marine and brackish water fauna. [1] Fishing is the way of life of most of coastal community. So, the marine fish fauna gives a greater commercial value to the country's economy, as well as well being of the coastal people. [2]
Sri Lankan freshwater habitats can be divided into 6 major types - river, stream, lake, pond, villu and paddy field - according to size, depth, rate of flow and type of bottom. Medium-sized rivers are called Oya and fast flowing streams torrential streams are called Dola in Sinhalese. The following list provide the freshwater fauna of Sri Lanka.
The low salinity and high osmotic pressure makes them so different. Few fish can be found in all three ecological systems. There are 95 species of freshwater fish occur in the country, where 53 of those are endemic. 41% of all known species of fish of Sri Lanka are found in freshwater. There are about 70% of endemism of those fish.
This wound on the fish then heals, leaving almost no scarring. Species of Philometra require two hosts to complete their life cycle. After the larval worms are released from the host fish, they are ingested by copepods which act as an intermediate host. Once inside the copepod, the larvae molt several times. Fish may then eat the infested copepod.
Since Sri Lanka was ruled by the Portuguese, Dutch, and British. At various junctures, these nations introduced a number of exotic species, which included mammals, plants, birds, and fish. After Sri Lanka secured its independence, the introductions continued unabated, and the breeding of exotic aquarium fish for export became popular.
It was established on September 23, 1986 and became only one museum in Sri Lanka that represents natural history and natural heritage. [ 1 ] The National Museum of Natural History exhibits rare and threatened with extinction such as natural heritage of plant and animal species endemic to Sri Lanka, over 5,000 specimens of mammals, jurassic ...
View history; Tools. Tools. move to sidebar hide. Actions ... Freshwater fish; Introduced fish; Cartilage fish; ... The following list documents mantises in Sri Lanka ...
Macrognathus pentophthalmos, the Sri Lanka five-eyed spiny eel, is a small species of spiny eel that is endemic to freshwater habitats in Sri Lanka. Described as a common species as recently as 1980, for unknown reasons its population rapidly declined in the following years and there are no recent confirmed records. [ 3 ]