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.
The coelocanth is one example of a lobe finned fish. Another example would be the six extant (non extinct) species of lungfish.
lobe-finned fish
lobe-finned fish
lobe-finned fish
The Coelacanth, a lobe-finned fish.
They are a tropical ray-finned fish.
The main difference between lobe-finned fish and ray-finned fish lies in their fin structure. Lobe-finned fish have fleshy, lobed fins supported by a bony structure, while ray-finned fish have fins supported by bony rays. Additionally, lobe-finned fish are believed to have given rise to tetrapods, including amphibians, reptiles, birds, and mammals.
Perch are lobe-finned. The fins on Perch fish are fairly rounded and distinct for this species of fish in the wild.
They are a tropical ray-finned fish.
lobe-finned fish
It lived in water.
http://en.wikipedia.org/wiki/Actinopterygii They are ray-finned. Search for 'perch' on that page and it says on there =]