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Paracanthurus hepatus is a species of Indo-Pacific surgeonfish.A popular fish in marine aquaria, it is the only member of the genus Paracanthurus. [2] [3] A number of common names are attributed to the species, including regal tang, palette surgeonfish, blue tang (leading to confusion with the Atlantic species Acanthurus coeruleus), royal blue tang, hippo tang, blue hippo tang, flagtail ...
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]
The powder blue tang is rarely harvested for anything other than the marine aquarium industry. It is a commonly sold fish that is moderately difficult to care for, although its popularity is easily exceeded by the regal tang and yellow tang. [citation needed] They are very prone to Cryptocaryon irritans. [6]
Blue tang is the common name of several species of surgeonfish. These include: Acanthurus coeruleus, a surgeonfish usually found in the Caribbean and the tropical Atlantic Ocean; Acanthurus leucosternon, a surgeonfish usually found in the tropical Indian Ocean; Paracanthurus hepatus, a surgeonfish usually found in the tropical Pacific Ocean
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.
By eating the algae off of other fish, the blue tang serve as cleaners for them. [2] With the decline in the Diadema antillarum population, the blue tang population increased since the algal resources that the two animals usually competed for were more abundant. [8] Juvenile blue tangs eat continuously and feed heavily.
Zebrasoma xanthurum was first formally described as Acanthurus xanthurus in 1852 by the English zoologist Edward Blyth with its type locality given as Sri Lanka. [5] However, this species has not reliably been recorded in Sri Lanka since Blyth's description and the type locality may be erroneous. [1]
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.