Scuba Diving with a Sand Sifter Goby on the Great Barrier Reef near Port Douglas
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As you dive on the reefs, you'll find these sand sifter goby fish churning up the sand looking for the little critters that live within for food.
The gobies form the family Gobiidae, which is one of the largest families of fish, with more than 2,000 species in more than 200 genera.[1] Most are relatively small, typically less than 10 cm (4 in) in length. Gobies include some of the smallest vertebrates in the world, such as species of the genera Trimmatom nanus and Pandaka pygmaea, which are under 1 cm (3/8 in) long when fully grown. Some large gobies, such as some species of the genera Gobioides or Periophthalmodon, can reach over 30 cm (1 ft) in length, but that is exceptional. Although few are important as food for humans, they are of great significance as prey species for commercially important fish such as cod, haddock, sea bass, and flatfish. Several gobies are also of interest as aquarium fish, such as the bumblebee gobies of the genus Brachygobius.
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