Some fish come onto the land to hunt or move around. Typically, this behavior happens at nighttime, as seen in eels, for instance. In the new study, researchers have found that such amphibious fishes might have an enhanced sense of smell. Their genomes revealed an unusually high number of the olfactory receptor genes that might facilitate smelling better in the air.
Click here for original story, Sensory evolution: Fish smelling well in the water and in the air
Source: Phys.org