The Micro frog, Microbatrachella capensis.

This tiny frog is one of the smallest and most endangered amphibians in South Africa. It only occurs in certain areas between Betty's Bay and Cape Agulhas and on the Cape Flats, where it survives in acidic blackwater fynbos vleis. The filling in, drainage or pollution of vleis, and alien vegetation encroachment, are major threats facing this frog species. Adult length: 15 mm.
(Text and picture by Cape Nature Conservation).