Threadfin Dartfish

Ptereleotris hanae, the Blue hana goby, is a species of dartfish native to the western Pacific Ocean. It is a reef inhabitant, being found at depths of from 3 to 50 metres (9.8 to 164.0 ft), though usually no shallower than 6 metres (20 ft). It inhabits burrows made by alpheid shrimp, but unlike the Amblyeleotris gobies who normally associate with these shrimp, this species has no interactions with their shrimp hosts. This species can reach a length...