Hovering blue dart goby larva, Ptereleotris calliura;ID by Dr. Benjamin Victor., IUCN Red list Craig, M.T. & Williams, J.T. 2015. Ptereleotris calliura. The IUCN Red List of Threatened Species 2015: e.T186052A1808038. http://dx.doi.org/10.2305/IUCN.UK.2015-2.RLTS.T186052A1808038.en. Downloaded on 19 July 201..added to www.fishbase.us