The smallest fish in the world is Paedocypris progenetica. Its habitat is the island of Sumatra in Indonesia. Fish live in swamps in an acidic environment. Previously, the leader in small size was the goby Indo Pacific goby. But Indonesian fish "ahead" of its competitor by 0.1 mm. the body Size of an adult specimen is 7.9 mm Paedocypris progenetica has also received the status of the smallest of the spine, which can be found on Earth.
The female of this small fish puts only 2-3 eggs, and the male fertilizes each separately. The smallest fish has an almost transparent body. The small size of the trunk is necessary for the animal, because its bone marrow is not completely protected.
During the evolution of the fish has acquired a special kind of fins. Their development is associated with life in an acidic environment. Individuals feed on plankton, which is enough at the bottom of reservoirs. Paedocypris progenetica is now on the verge of extinction, because the swamps are constantly drained. If this continues, the record of bulls will never be broken.
