Eviota smaragdus Jordan & Seale, 1906
Emerald dwarfgoby
photo by Kuwabara, J.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  2.3 cm SL (male/unsexed)
Environment:  reef-associated; depth range 0 - 40 m
Distribution:  Western Pacific: Japan (Ryukyu and Ogasawara islands), Taiwan, the Philippines and south to Australia and Norfolk Is.; east to Vanuatu, Fiji, Wallis and Futuna, Tonga and Samoa, including Palau, Guam and Marshall Islands in Micronesia.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 8-9; Anal spines: 1-1; Anal soft rays: 7-8. This species is distinguished by the following characters: complete cephalic sensory-canal pore system (pattern 1); the fifth pelvic-fin ray 10-40% (usually 20%) of fourth ray; some pectoral-fin rays are branched; dorsal/anal-fin formula 9/8; presence of a prominent occipital spot; dorsal midline of body with a series of small dark spots along the dorsal-fin bases; dark bars present crossing the nape in advance of dorsal fin; caudal-peduncle depth 13.4-14.9% SL (Ref. 107299).
Biology:  Inhabits shallow waters, often including tide pools of exposed seaward reefs (Ref. 37816, 116739), usually in high-tide splash zones and at shallow depths (Ref. 107299).
IUCN Red List Status: Least Concern (LC); Date assessed: 09 March 2015 Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Froese, Rainer - 20.06.94
Modified by: Capuli, Estelita Emily - 16.04.19

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