Zoology Museum

Post Graduates and Research Department of Zoology, V.O. Chidambaram College, Tuticorin 628 008 Tamil Nadu

Pi 150 Acentrogobius ornatus ( Istigobius ornatus)

 

Phylum: Chordata  

Class: Teleostei 

Order: Gobiiformes

Family: Gobiidae 

Genus: Acentrogobius

Species: Acentrogobius ornatus

 

Description

A common species that inhabits mangroves and silty, rocky areas; occasionally found in rubble reef areas. Only single individuals were observed; many individuals found scattered over a small area . Found primarily in lower estuaries, usually in mangroves. This is the species of the genus that is found farthest inland. Feeds on small invertebrates. Dorsal spines (total): 7; Dorsal soft rays (total): 10-12; Anal spines: 1; Anal soft rays: 9 - 11; Vertebrae: 26. Upper 3-4 pectoral fin rays free. Body color pale gray; operculum with 5 small blue spots interspersed with brownish red spots; 5 vertical rows of white spots on pectoral fins; anterior tip of first dorsal fin bright yellow. 4th spine of 1st dorsal fin longest. Predorsal scales cycloid, trunk ctenoid. Mouth with overhanging snout, lips greatly thickened. Cheeks and operculae without scales. Female pelvic and anal fins not as darkly pigmented as in male. Also with terete body shape, slightly depressed; eyes situated dorso-laterally; reduced swim bladders.

IUCN status:  Least concern

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