Pandaka pygmaea, the dwarf pygmy goby, (also known as the Philippine goby) is a tropical freshwater fish of the family Gobiidae. It is one of the smallest fish in the world by mass, and is also one of the shortest freshwater fish. Mature males can reach up to  SL, while the females can grow up to SL. Average weight is from . It is known as bia and tabios in the Philippines.