Lobe-finned fish were prehistoric fish from the order of
Crossopterygii. These type of fish were discovered in fossils with
no known live specimen at the time of the discovery.
However in 1938 a fish species called Coelacanth, which was
thought to have been extinct, was discovered off the Southern coast
of Africa.
More recently, in 1997 and again in 1998, a separate breed of
Coelacanth, named Indonesian Coelcanth (Latimeria Menadoensis),
were discovered living in the oceans off of Indonesia. The
Indonesian Coelcanth (Latimeria Menadoensis) is officially listed
as "threatened", not extinct.
All species of lobe-finned fish are believed to be exctinct
except for the Coelacanth and Sulawesi Coelacanth.