Before the Slaves peopled the West Indies who were the original Inhabitants and do any communities still exist on the Islands?

Wikipedia describes some of them.

The term Arawak (from aru, the Lokono word for cassava flour), was used to designate the Amerindians encountered by the Spanish in the Caribbean. These include the Taíno, who occupied the Greater Antilles and the Bahamas (Lucayan) and Bimini Florida, the Nepoya and Suppoyo of Trinidad and the Igneri, who were supposed to have preceded the Caribs in the Lesser Antilles, together with related groups (including the Lokono) which lived along the eastern coast of South America as far south as what is now Brazil. The group belongs to the Arawakan language family and they were the natives Christopher Columbus encountered when he first landed in the Americas. The Spanish described them as a peaceful people.

Columbus, in his log, noted:

"They brought us balls of cotton thread and parrots and darts and other little things which it would be tedious to list, and exchanged everything for whatever we offered them...I kept my eyes open and tried to find out if there was any gold, and I saw that some of them had a little piece hanging from a hole in their nose. I gathered from their signs that if one goes south, or around the south side of the island, there is a king with great jars full of it, enormous amounts. I tried to persuade them to go there, but I saw that the idea was not to their liking."

The main catalyst for Taino society's drastic decline was due to smallpox. Constant attacks by the rival Carib tribes had and harsh treatment by the Spaniards merely accelerated the process. Taino society collapsed, but their bloodlines became woven in with those of new settlers, mainly Europeans and Africans.

Survivors

Most scholars believe that of the Island populations of Ciboney, Taino and Carib, only the Carib survive today. On the mainland of South America there are some 2,450 (1980 census) Arawaks living in Venezuela, Guyana, Suriname, and French Guyana with 2,051 in Suriname. The Caribs on mainland South America number 10,225 (2000 WCD) in Venezuela, Guyana, Suriname, and French Guyana.

Other sources have spoken of a 95%+ drop in population within 100 years after Columbus landed.

Indigenous peoples of the Caribbean

Thanks DG
Thats a good surf following up that information

Even if the absolute total is forever unknowable, there are other numbers that tell a haunting tale. In the 1960s, a Berkeley geographer, Carl Sauer, cited evidence of a 1496 census that Columbus's brother Bartholomew ordered for tax purposes on Hispaniola (now Haiti and the Dominican Republic). The Spanish counted 1.1 million Indians. Since that sum covered only Hispaniola's Spanish-controlled half and excluded children, Sauer concluded that 3 million Indians once inhabited the island. But a generation after 1492, a Spanish resident reported Hispaniola's Indian population had shrunk below 11,000.

The island's collapse was only a preview. By 1650, records suggest that only 6 million Indians remained in all of North America, South America, and the Caribbean. Subtract 6 million from even a conservative estimate of the 1492 population--like Denevan's consensus count of 54 million--and one dreadful conclusion is inescapable: The 150 years after Columbus's arrival brought a toll on human life in this hemisphere comparable to all of the world's losses in World War II. - MYSTERIES OF SCIENCE, US News & World Report, August 18, 1997