Glossogobius giuris (Hamilton, 1822)
Tank goby
photo by Aland, G.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  50 cm SL (male/unsexed)
Environment:  benthopelagic; depth range 0 - 5 m, amphidromous
Distribution:  Africa to Oceania: Red Sea and East Africa and most inland freshwater bodies over the Indian Ocean and western Pacific. Common in coastal and estuarine waters from austral Africa and Madagascar to India and south of China.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 8-9; Anal spines: 1-1; Anal soft rays: 8-9. Head flattened, lower jaw projecting; body pale without longitudinal lines (Ref. 4967). Dorsal fins with small spots forming longitudinal stripes (Ref. 2798). Pelvic fins jointed but attached to the body only from their anterior part. The body is brownish yellow with 5 to 6 dark and rounded spots on its sides. Some specimens living on dark substrates can be very dark also. Some living on very light substrates show an ivory coloration. Dorsal fins are light with brownish spots. Pelvic fins are grey. Pectorals and caudal are grey and often hyaline (Ref. 48660).
Biology:  Found mainly in freshwater and estuaries, but also enter the sea (Ref. 4833). Also occur in canals, ditches and ponds (Ref. 12693). Found in clear to turbid streams with rock, gravel or sand bottoms (Ref. 2847). Encountered in medium to large-sized rivers of the lower Mekong (Ref. 12975). Feed on small insects, crustaceans and small fish. Grow to a much larger size in brackish water than in fresh water. Marketed fresh (Ref. 12693). Cannibalism is relatively common for this species (Ref. 48660).
IUCN Red List Status: Least Concern (LC); Date assessed: 02 July 2016 Ref. (120744)
Threat to humans:  harmless
Country info:   
 

Entered by: Binohlan, Crispina B. - 19.12.91
Modified by: Valdestamon, Roxanne Rei - 08.06.15
Checked by: Garilao, Cristina V. - 21.02.97

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