Gobies form the family Gobiidae, one of the larges families of fish with over 2,000 species. Gobies are relatively small fish, typically less than 10 cm (4″) in length. The goby family includes some of the smallest vertebrates in the world, species such as Trimmatom nanus and Pandaka pygmaea, which are under 1 cm (3/8″) long when fully grown. Some large species of gobies, such as the Gobioides or Periophthalmodon, can reach over 30 cm (1′) in length, but that is exceptionally rare. Generally gobies are benthic, or bottom-dwellers. Some are important as food for humans, as they are of great significance as prey species for commercially important fish such as cod, hoddock, sea bass, and flatfish. Several gobies are popular for aquarium fish, especially bumblebee gobies.

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