ATLANTA (October 20, 2009)--The oldest known eastern bongo antelope in captivity, which was born at the Gladys Porter Zoo in Brownsville in 1989, has died at Zoo Atlanta.

The antelope, named Mzima, was euthanized at 19 because of declining health related to her age, Zoo President and CEO Dennis Kelly said Tuesday.

The bongo was moved to the zoo in 2004 from the zoo in Brownsville.

Mzima was the oldest bongo living in an accredited U.S. zoo, and the second-oldest eastern bongo in captivity worldwide.

Bongos are among the most endangered animals at the zoo and just 500 are believed to remain in the wild.

The animals are striped with long horns and are native to Africa.