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Acentrogobius nebulosus (Forsskål, 1775) Shadow goby |
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| Biyang dagat, Shadow goby, Bagtis, Bakuli, Bala, Bia, Borod, Bunak, Palo, Rumbeb, Tambo-tambo, Tambud butobuto | ||
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photo by
Ryanskiy, A. |
| Family: | Gobiidae (Gobies), subfamily: Gobiinae | |||
| Max. size: | 18 cm SL (male/unsexed) | |||
| Environment: | reef-associated; freshwater; brackish; marine; depth range 0 - 15 m, amphidromous | |||
| Distribution: | Indo-West Pacific: East Africa, south to Durban in South Africa (Ref. 2798), through Indonesia to Micronesia, north to China and the Ryukyu Islands (Ref. 559), south to northern Australia. | |||
| Diagnosis: |
Dorsal spines (total): 7-7; Dorsal soft rays (total): 9-9; Anal spines: 1-1; Anal soft rays: 9-9. Diagnosis: Characterized by pale grey body colour with three large dark brown blotches on side; head and body with faint brown scribbling; elongate and filamentous second and third dorsal spines; rounded caudal fin, slightly shorter than head; longitudinal scale series 26-30; head without scales; ctenoid body scales except cycloid on breast, base of pectoral fin and anterior part of abdomen; midline of nape without scales or 1-2 scales just before origin of dorsal fin; depth of body 3.2-3.4 times in standard length (Ref. 2798, 90102). Description: Outwardly-curved enlarged tooth at each side of lower jaw (Ref. 2798). Dorsal fin with 7 spines and 9 soft rays; anal fin with 1 spine and 9 soft rays; pectoral fin with 18-19 rays (Ref. 2798). Scales on lateral line 26-30; midline of nape naked (Ref. 2798). Colouration: Pale grey body colour with three large dark brown blotches on side; head and body with faint brown scribbling (Ref. 90102). Margins of median fins often black (Ref. 2798). |
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| Biology: | Solitary (Ref. 90102). Found over silty (Ref. 58652) and muddy bottoms around inner reefs. Common in mangroves, entering estuaries and rivers (Ref. 4343). Toxin concentrated in the skin; contains 28.7 µg/g tetrodotoxin in the internal organs while the flesh holds 1.7 µg/g (Ref. 5719). | |||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 01 July 2016 Ref. (130435) | |||
| Threat to humans: | poisonous to eat | |||
| Country info: | Known from Sorsogon City (Ref. 58652). Museum:Taytay Bay, coral reef, spoon net, FRLM 12261(as Y. criniger). Also Ref. 2334. | |||