Pandaka pygmaea, the dwarf pygmy goby, also known as the Philippine goby is a tropical freshwater fish of the family Gobiidae. It is a colorless and nearly transparent species. It is one of the smallest fish in the world by mass, and is also one of the shortest freshwater fish.
It is primarily a Philippine species that was endemic in the rivers of Malabon, Metro Manila. It used to frequent shady river banks in Rizal Province of Luzon, Philippines. It has also been collected in the sea at Culion Island, near Palawan, Philippines.