At the end of January biologists announced that they found the smallest fish in the world in Sumatra, Indonesia. It was classified in Paedocypris. According to them, when adult reaches a maximum length of 7.9 mm. Immediately after finding the fish they realized that the species is in danger of extinction, since it lives in specific lakes and this ecosystem is on the way to extinction. Days later, however, the brand was questioned: There can be smaller fish than Paedocypris. However, this is not easy to confirm.