King goby (Gladiogobius rex) is a ray-finned fish of the family Gobiidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 3.9 cm. It occurs at depths between 0 and 2 metres. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.
Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 9 - 10; Anal spines: 1; Anal soft rays: 9. Characterized by pale grey body color with narrow brown stripes and longitudinal rows of bluish white dots on side of body; lower side of body with row of five rectangular brown blotches; irregular brown markings on back; head with dark oblique lines; presence of large brown spot above pectoral fin base; dorsal spines sometimes with filamentous tips; rounded caudal fin; longitudinal scale series 23-25; head and nape without scales; ctenoid body scales except cycloid on abdomen, pectoral fin base and prepelvic region; median predorsal scales absent; opening of gill not reaching to above edge of preopercle; very long cheek spine, length about twice eye diameter and extending well beyond posterior margin of opercular membrane; depth of body 4.8-6.0 in SL .: elongated.
Behavioural data for King goby is currently being reviewed.
Diet information for King goby is currently being compiled.
Reproduction data for King goby is currently being compiled.
Marine; demersal; depth range 0 - 2 m . Tropical Indian Ocean: Andaman Sea to Red Sea.
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