Year Last Seen:

1986

Comments:

This species was endemic to Lake Atitlán, Guatemala, but is now Extinct. Its extinction occurred sometime between 1983 and 1986, caused by myriad alterations to its habitat.

Habitat:

It inhabited one freshwater lake.

Causes:

Initial population declines were a result of competition and predation by …

Year Last Seen:

1985

Comments:

Thorough surveys of Lake Alaotra in 1989, and further surveys in 2004 and 2009 failed to find any evidence of the species. Multiple methods for determining the likelihood of extinction have used the sighting history of this species as a test dataset and each has …

Year Last Seen:

1977

Comments:

This species was only known from Lake Tota, Colombia. It was last recorded in 1977 and is now Extinct as a result of human-induced changes to the lake, with intensive searches in 1981 failing to find it.

Habitat:

It inhabited freshwater wetlands, including reed-fringed pools …