Acanthemblemaria atrata
Encyclopedia
Acanthemblemaria atrata is a species of chaenopsid blenny
Chaenopsidae
The blennioid family Chaenopsidae includes the pike-blennies, tube-blennies and flagblennies: all perciform marine fish. The family is strictly tropical, ranging from North to South America...

 in the genus Acanthemblemaria
Acanthemblemaria
Acanthemblemaria is a genus of fish in the Chaenopsidae family.It contains the following species:* Acanthemblemaria aspera -- roughhead blenny * Acanthemblemaria atrata Hastings and Robertson, 1999...

. It is found around Cocos Island
Cocos Island
Cocos Island is an uninhabited island located off the shore of Costa Rica . It constitutes the 11th district of Puntarenas Canton of the province of Puntarenas. It is one of the National Parks of Costa Rica...

, Costa Rica
Costa Rica
Costa Rica , officially the Republic of Costa Rica is a multilingual, multiethnic and multicultural country in Central America, bordered by Nicaragua to the north, Panama to the southeast, the Pacific Ocean to the west and the Caribbean Sea to the east....

, in the eastern central Pacific ocean. It was named by P.A. Hastings and D.R. Robertson in 1999. Male Acanthemblemaria atrata can reach a maximum length of 3.2 centimetres, while females can reach a maximum length of 3.17 centimetres.
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