Lob fin fish __________ is considered living fossil.

Coelacanth is a lobe-finned fish that was thought to be extinct but was discovered alive in 1938 in South Africa. It has remained largely unchanged for millions of years and is therefore considered a living fossil.

Cichlid fish are a diverse family of ray-finned fishes.

Seymouria is an extinct genus of amphibian-like tetrapods.

Ichthyosaurs are extinct marine reptiles.

Answer: Coelacanth