Genus
Mola
A sunfish (or mola) is any fish in the Mola genus (family Molidae). The fishes develop their truncated, bullet-like shape because the back fin, with which they are born, never grows. Instead, it folds into itself as the creature matures, creating a rounded rudder called a clavus. Mola in Latin means “millstone” and describes the ocean sunfish’s somewhat circular shape. They are a silvery color and have a rough skin texture.