Gobiodon citrinus
Encyclopedia
Gobiodon citrinus is a Goby
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...

 from the Indo-West Pacific. It occasionally makes its way into the aquarium trade. It grows to a size of 6.6 cm in length.
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