Fish are able to jump out of water, but humans cannot. Why?

Fish have evolved to move very quickly through the water, humans have evolved to be land based, walking/running animals. Because fish can move very quickly through the water, they can build up enough speed to not only break the surface tension of the water, but to leap clear of the surface. read more

Fish need oxygen to live, like humans do. At times, when the oxygen level reduces in the water, the fish might jump out to other small water bodies. Bad pH level is another cause. read more

Other fish that are known to jump out of their tanks include comet goldfish, killifish, (which tend to jump from water puddle to water puddle in the wild), and on the saltwater side, firefish are known jumpers. read more