Gerres oyena   (Forsskal,  1775) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Actinopterygii
Order:Perciformes
Family:Gerreidae

Image copyrights: Randall, J.E.

Description
Size: 18-30 cm.

Color: Silvery, darker above, spinous dorsal with a blackish margin.

Oblong, rostro-dorsal profile rounded and continued in the rounded dorsal profile, height 2.50 to about 3 in length, head 3 to 3.30, pointed. Eye 3.1 to 3.5 in head, equal to or somewhat less than inter orbital space, which is scaleless in its middle, snout about equal to eye or somewhat shorter. Lacks distinctive features and is more slender compared to other similar species. U-shaped premaxilla groove mostly without scales (tiny scales anteriorly in specimens over 13 cm SL). Posterior margin of maxillary beyond a vertical through anterior margin of pupil. Body silvery with 6-8 irregular, faint dusky oblique and vertical bands dorsolaterally and ventrolaterally (usually more apparent in young stressed or preserved specimens. Scales between 5th dorsal fin spine and lateral line 3-4, usually 3.5. Pelvic fin when fresh is semi-transparent or dull yellow color with an indistinct dusky band and dull white distal margin posteriorly. Spinous dorsal fin with an indistinct dusky patch (2nd-6th spines) and very narrow dusky distal margins on upper membranes between spines. Supraneural bones 3. G. oyena can be distinguished from G. longirostris (synonym G. acinaces) by its larger scales and dark tip on the dorsal fin. Maxillary reaching not concave. Scales thin, deciduous. Praeoperculum entire, its angle rounded. Lower pharyngeal bones united by a mobile suture, covered by conical or tubulate small teeth, getting somewhat larger towards median line. Origin of dorsal at a distance from end of snout longer than height of body but conspicuously less than length of spinous and soft dorsal together. Second, third and fourth dorsal spine slender, longer than the following spines, the second and third subequal about twice in height of body. Second and third anal subequal or the third somewhat longer equal to diameter of eye. Pectorals reaching somewhat behind vertical through anus, ventrals shorter than head without snout. Least height of caudal peduncle somewhat less than its length.

Breeds in late summer to early rainy season.

Remarks: Values in above description denote proportions.


Synonym (s)
Labrus oyena Forsskal, 1775
Labrus oyena Bloch, 1801
Labrus longirostris Lacepede, 1802
Labrus brittanus Lacepede, 1803
Smaris oyena Ruppell, 1828
Gerres oyena Cuvier and Valenciennes, 1830
Gerres oyena Jenyns, 1842
Gerres oyena Bleeker, 1845
Gerres oyena Bleeker, 1850
Gerres oyena Gunther, 1862
Diapterus oyena Bleeker, 1863
Gerres oyena Playfair and Gunther, 1866
Gerres oyena Klunzinger, 1870
Diapterus oyena Bleeker, 1877
Gerres oyena Day, 1888
Gerres oyena Macleay, 1881
Gerres oeyena Klunzinger, 1884
Gerres oyena Sauvage, 1891
Gerres oyena Picaglia, 1894
Xystaema oyena Seale and Bean, 1908
Xystaema oyena Seale, 1910
Xystaema oyena Kendall and Goldborough, 1911
Gerres oyena M. Weber, 1913
Gerres oyena Chaudhuri, 1923
Xystaema oyena Barnard, 1927
Gerres oyena Fowler, 1928
Gerres oynea Forsskal, 1775
(Misspelling)
Diapterus oyena (Forsskal, 1775)
(Senior synonym)
Gerreomorpha rostrata Alleyne & Macleay, 1877
(Junior synonym)
Gerres australis Castelnau, 1875
(Junior synonym)
Gerres carinatus Alleyne & Macleay, 1877
(Junior synonym)
Gerres oblongus (non Cuvier, 1830)
(Misapplied name)
Gerres socotranus Steindachner, 1902
(Junior synonym)
Gerres splendens De Vis, 1885
(Junior synonym)
Labrus oyena Forsskal, 1775
(Senior synonym)
Smaris oyena (Forsskal, 1775)
(Senior synonym)
Xystaema oyena (Forsskal, 1775)
(Senior synonym)
Gerres acinaces Day, 1870
Gerres oyena Day, 1878

Common Name (s)
• Lined Silver Biddy (English)
• Common Silverbiddy (English)
• Common Mojarra (English)
• Paiya (Kannada)
• Uniyamas (Mahl)
• Purachi (Malayalam)
• Charbat (Marathi)
• Oodan (Tamil)
• Jagili
• Common Silver-Biddy (English)
• Slenderspine Mojarra (English)
• Lined mojarra (English)
• Udagam
• Silver Biddy (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries. Marketed fresh or frozen, dried and salted, utilized as fish meal and duck food)

Ecology
Habitat:  Reef Associated, Estuarine, Coastal
Trophic Level:  Secondary Consumer
Prey:  Benthic invertebrates, detritus

Biogeography


• Andaman and Nicobar Islands, Nicobar Islands (Lat: 7) (Long: 93) INDIA
• West Bengal, Kiagoria INDIA (Record: 1981-1982)
• West Bengal, Digha Coast (Lat: 21.61) (Long: 87.53) INDIA
• MYANMAR
• INDIA
• Tamil Nadu, Chennai Coast INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Lakshadweep, Bitra INDIA
• Lakshadweep, Kadamatt INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep INDIA
• Red Sea
• Orissa, Chilika INDIA
• Andaman and Nicobar Islands, Nicobar Islands INDIA (Record: 08/2000-07/2003)
• West Bengal, Hugli Matla Estuary INDIA
• West Bengal, Digha Ghole (Lat: 21.61) (Long: 87.53) INDIA (Record: 1981-1982)
• Orissa, Chilika Lake INDIA (Record: 1948-1950)
• Orissa, Dhamra Estuary INDIA
• Tamil Nadu, Mandapam INDIA
• Lakshadweep, Minicoy Island (Lat: 8.11) (Long: 73.3) INDIA
• Andaman and Nicobar Islands INDIA
• Andhra Pradesh, Off Visakhapatnam (Lat: 17.73) (Long: 83.55) INDIA (Record: 04/1989-03/1990) (Depth: 50 mts)
• West Bengal (Lat: 21.45) (Long: 87.9) INDIA

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Page last updated on:2012-01-17

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