Bryaninops yongei, the wire-coral goby or whip coral goby, grows to a max of 3cm in length.
Whip coral gobies reproduce through benthic spawning, meaning they release eggs and sperm to be fertilized externally. They also have the ability to change their sex when there is a gender imbalance.
Gobies such as the whip coral goby respond to chemical signals released from the coral reefs they inhabit. The gobies will eliminate algae toxic to coral from their environment and will also clean mucus build-ups off of coral.
As you can see on this Picture they often have parasites. This one has a parasite sitting in its gills which is the white worm you can see.