Yes, this is apparently a species of Acentrogobius, but I am unable to identify the species [some characters needed for identification, like anal-fin rays and predorsal scales, are not visible in the photographs.]
See this pic from Rick Winterbottom: http://www.fishwisepro.com/Pictures/details?SId=76295&PictureId=2&Gallery=True&Zoom=True&Page=1&Info=%27Istigobius%20%25diadema%27&Filter=20414E442028506963747572652E534964203D20373632393529&Flt=20
and this one: http://www.kahaku.go.jp/research/db/zoology/Fishes_of_Andaman_Sea/contents/gobiidae/61.html