Nemateleotris magnifica Fowler 1938
red fire goby

family Microdesmidae - dart gobies

The Red Fire Goby, Nemateleotris magnifica, has a white head and body grading into a red-orange tail. It has a conspicuous, tall, white, first dorsal fin. which may be used for signaling between pairs

Distribution =   widespread tropical west Pacific
Max size =   7.5cms