Stigmatogobius sadanundio (Hamilton, 1822)
Stigmatogobius sadanundio
photo by Vidthayanon, C.

Family:  Gobiidae (Gobies), subfamily: Gobionellinae
Max. size:  9 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater; brackish; pH range: 7 - 8; dH range: 9 - 19, amphidromous
Distribution:  Asia: India, Sri Lanka and the Andamans to Singapore and Indonesia.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 7-8; Anal spines: 1-1; Anal soft rays: 7-8; Vertebrae: 26-27. Body pearly grey with three or four roughly aligned rows of round black spots along the sides; bases of soft dorsal and anal fins with elongate spots and streaks (aligned with fin rays); elongate blackish spot on first dorsal fin between third to fifth dorsal fin spines; presence of interobital and post-orbital pores, preopercular pores. Second dorsal rays I,7-8. Anal rays I,7-8. Pectoral rays 18-21. Longitudinal scales 25-29. Transverse scales backward 8-10. Predorsal scales 7-10, reaching behind eyes (Ref. 56945).
Biology:  Occurs in estuaries and tidal zone of rivers. Prefers fresh water, rarely found in brackish water. Feeds on small fishes and invertebrates, including mosquito larvae (Ref. 12693).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (126983)
Threat to humans:  harmless
Country info:  Also Ref. 43716.

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