OMOBRANCHUS OBLIQUUS - (GARMAN, 1903)
Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Blenniiformes (Order) > Blennioidei (Suborder) > Blenniidae (Family) > Blenniinae (Subfamily) > Omobranchus (Genus)
Mangrove blenny, Mangrove oysterblenny, Roundhead blenny,
Synonymes
Omobranchus rotundiceps obliquus (Garman, 1903)
Petroscirtes obliquus (Garman, 1903)
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Description
Dorsal spines (total): 11 - 13; Dorsal soft rays (total): 18-21; Anal spines: 2; Anal soft rays: 20 - 23. Max length : 5.6 cm SL. Depth range 0 - 3 m.
Body elongate. Ventral end of gill opening extending to opposite 2nd to 8th pectoral rays. Dorsal fin slightly notched. Caudal fin lacking branched rays.
body light brown with oblique blackish bands on side of body that pass downward and posteriorly on anterior half of body and downward and anteriorly on posterior half; white lines between blackish bands; 2 irregular series of black spots on body dorsally; a large quadrangular blackish blotch behind eye; irregular black lines on head ventrally.
Dimorphic: Males grow to slightly larger sizes and have bright yellow pelvic fins and chin, and an electric blue spot on the posterior half of the dorsal fin. Males also tend to have broader longitudinal bands.
Etymology
Omobranchus: Greek, omo = shoulder + Greek, brangchia = gill.
Distribution
Indo-Pacific: Nicobar Islands to Samoa; north to Mariana Islands; south to New Caledonia; Palau and eastern Caroline Islands.
Biology
Adults inhabit mangroves and sheltered bays. Occur among corals, rocks, and rubble of shallow waters. Benthic. Oviparous. Eggs are demersal and adhesive, and are attached to the substrate via a filamentous, adhesive pad or pedestal. Larvae are planktonic, often found in shallow, coastal waters.
Similars species
Omobranchus rotundiceps (MacLeay, 1881) occur in Australia.
Mangrove blenny, Mangrove oysterblenny, Roundhead blenny,
Synonymes
Omobranchus rotundiceps obliquus (Garman, 1903)
Petroscirtes obliquus (Garman, 1903)
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Description
Dorsal spines (total): 11 - 13; Dorsal soft rays (total): 18-21; Anal spines: 2; Anal soft rays: 20 - 23. Max length : 5.6 cm SL. Depth range 0 - 3 m.
Body elongate. Ventral end of gill opening extending to opposite 2nd to 8th pectoral rays. Dorsal fin slightly notched. Caudal fin lacking branched rays.
body light brown with oblique blackish bands on side of body that pass downward and posteriorly on anterior half of body and downward and anteriorly on posterior half; white lines between blackish bands; 2 irregular series of black spots on body dorsally; a large quadrangular blackish blotch behind eye; irregular black lines on head ventrally.
Dimorphic: Males grow to slightly larger sizes and have bright yellow pelvic fins and chin, and an electric blue spot on the posterior half of the dorsal fin. Males also tend to have broader longitudinal bands.
Etymology
Omobranchus: Greek, omo = shoulder + Greek, brangchia = gill.
Distribution
Indo-Pacific: Nicobar Islands to Samoa; north to Mariana Islands; south to New Caledonia; Palau and eastern Caroline Islands.
Biology
Adults inhabit mangroves and sheltered bays. Occur among corals, rocks, and rubble of shallow waters. Benthic. Oviparous. Eggs are demersal and adhesive, and are attached to the substrate via a filamentous, adhesive pad or pedestal. Larvae are planktonic, often found in shallow, coastal waters.
Similars species
Omobranchus rotundiceps (MacLeay, 1881) occur in Australia.