Smallest Fish

Scientists have discovered a fish living in forest swamps on the Indonesian island of Sumatra that is only 7.9 millimeters long.

The species of fish belongs to the carp family and is called Paedocypris progenetica . It is the world's smallest vertebrate or backboned animal.

http://en.wikipedia.org/wiki/Paedocypris

http://news.mongabay.com/2006/0126-smallest_fish.html

http://www.nhm.ac.uk/about-us/news/2006/jan/news_7501.html