Dwarf pygmy goby
 Pandaka pygmaea the Dwarf pygmy 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 1.1 centimetres (0.43 in) SL while the females can grow up to 1.5 centimetres (0.59 in) SL. Average weight is from 4 to 5 milligrams (0.00014 to 0.00018 oz). It is known as bia and tabios in the Philippines.