Emblemariopsis occidentalis, known commonly as the Flagfin blenny in the Bahamas, the Blackfin blenny in Puerto Rico

Puerto Rico

Puerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...

, and the Redspine blenny in Cuba

Cuba

The Republic of Cuba is an island nation in the Caribbean. The nation of Cuba consists of the main island of Cuba, the Isla de la Juventud, and several archipelagos. Havana is the largest city in Cuba and the country's capital. Santiago de Cuba is the second largest city...

, Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

, and the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, 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 Emblemaria

Emblemaria

Emblemaria is a genus of chaenopsid blennies found throughout the Pacific and Atlantic oceans.-Species:* Banner blenny, Emblemaria atlantica * Emblemaria australis...

. It was named by John S. Stephens, jr., in 1970. It is found around the Bahamas, Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

, and the Lesser Antilles

Lesser Antilles

The Lesser Antilles are a long, partly volcanic island arc in the Western Hemisphere. Most of its islands form the eastern boundary of the Caribbean Sea with the Atlantic Ocean, with the remainder located in the southern Caribbean just north of South America...

, in the western Atlantic ocean. Male Emblemariopsis occidentalis can reach a maximum length of 1.9 centimetres, while females can reach a maximum length of 1.69 centimetres.