Turquoise Killifish
Nothobranchius furzeri

In Zimbabwe where Turquoise Killifish live, they hatch from eggs that have lain dormant since the last year and occupy temporary pools of water that form just after annual rains.

The progesssion of the fish's life, from hatching, its juvenile to adult transformation, and egg-laying is extremely rapid, taking place before the water dries up and the fish dies.

But the other small fish, the Pygmy Goby, lives in a coral reef, so the reasons for a short lifespan vary. In both cases, scientists are very interested in the studying these short-lived fishes to understand more about the process of aging.