Gobioides is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of gobies

Goby

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. Most are relatively small, typically less than 10 cm in length...

 also known as coral gobies or "clown gobies" (which can also mean the related genus Microgobius gulosus). Generally, coral gobies, unlike the rest of the Gobiidae family, are not burrowers, but instead prefer to inhabit the branches of certain acropora

Acropora

Acropora is a genus of scleractinian coral in the Phylum Cnidaria. Some of its species are known as table coral, elkhorn coral and staghorn coral. There are currently 149 described species...

 or similar hard corals.

As a group, they have a general fusiform shape and are small, most ranging about 6 cm, though there are exceptions.

Species

• G. acicularis, often confused with G. ceramensis
• G. albofasciatus, the Whitelined coral goby http://www.fishbase.org/Summary/SpeciesSummary.php?id=22460
• G. albolineatus
• G. atrangulatus, the Green clown goby, or the Earspot coral goby http://www.liveaquaria.com/product/prod_Display.cfm?pCatId=159
• G. axillaris
• G. broussonnetii, the Violet Goby
  Violet goby
  The violet goby, Gobioides broussonnetii, is a member of the family Gobiidae of the order Perciformes. It is native to brackish waters near the Atlantic coast of North and South America. Its commercial trade name is Dragon Goby or Dragon Fish...
  
   sometimes referred to as Dragon Goby
• G. brochus, the Velcro lips (sometimes confused with G. micropus)
• G. ceramensis, the Black clown goby
• G. citrinus, the Citron goby, the Poison goby, the Lemon coralgoby, or the Blue stripe goby http://fins.actwin.com/species/index.php?t=9&i=542
• G. erythrospilus
• G. fulvus
• G. heterospilos
• G. histrio, the Blue-spotted coral goby, Green coral goby, or Broadbarred goby http://fins.actwin.com/species/index.php?t=9&i=101
• G. micropus
• G. multilineatus
• G. oculolineatus
• G. okinawae
  Yellow clown goby
  The yellow clown goby, Gobiodon okinawae, also known as the Okinawa goby or yellow coral goby, is a member of the goby family native to the western Pacific from southern Japan to the southern reaches of the Great Barrier Reef. As the name implies, they are bright yellow in color, save for a...
  
  , the Yellow clown goby
• G. prolixus, a newly-discovered species from Australia
  Australia
  Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
  
   http://www.amonline.net.au/fishes/fishfacts/fish/gprolixus.htm
• G. quinquestrigatus, the Five-lined coral goby
• G. reticulatus
• G. rivulatus, the Rippled coral goby
• G. spilophthalmus
• G. unicolor, the Purple coral goby