Plectorhynchus orientalis   (Bloch)  1793 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Size: 15.2 cm.

Color: In preserved specimens yellowish with broad dark brown bands and large parches, which are more developed in young than in older specimens. A patch on snout. An irregular band from eye to end of caudal, the band sides connected by a double or single broad band above and behind eyes. Another branch runs from eye to corner of mouth and is connected with that of the other side over isthmus. A large parch, connected or not with the longitudinal band behind head, covering the greater part of the back, the basal half of the spinous dorsal and, broadening posteriorly, covering more and more of the soft dorsal, till it colors the whole of the fin between about the tenth and the fourteenth ray. The posterior part of the dorsal is again white. At this point it is again connected with the median band through an irregular ventral prolongation. A band from base of pectoral to base of anal, on which fin it widens, forming a large patch. This band may be continuous or interrupted. Caudal with a broad band along upper and lower lobe. Pectorals black, with a narrow white margin. Ventrals yellowish with or without a small dark patch. Spinous dorsal sometimes with a narrow dark margin.

Height 2.9, 3.8 in length with caudal. head 3.3, 4.4 in length with caudal. Eye 3.4, 1.5 in snout and equal to convex inter orbital space. Mouth somewhat oblique. Maxillary reaching nearly to below front border of eye. Teeth in about five rows in the jaws, the outer series in the upper jaw enlarged. Preoperculum rounded, denticulate behind. Dorsal notched. First dorsal spine half length of second. Second, third and fourth spines sub equal, longest, slightly more than post orbital part of head. Spines gradually decreasing in length posteriorly, the last one about two thirds of the longest. Soft dorsal rounded behind. The first soft ray not much longer than last spine. The following rays decreasing in length to the fourteenth, which is somewhat longer than longest spine. first anal spine minute, second one longer and stronger than third, somewhat more than post orbital part of head. Soft anal rounded, longest ray slightly longer than longest ray of soft dorsal. End of anal eighth ray of soft dorsal. Pectorals slightly longer than ventrals, equal to head without snout. Ventral spine somewhat more than post orbital part of head. Caudal rounded. Least height of caudal peduncle about 1.5 in its length, giving the impression of being very slender, as the end of the anal is far more anterior than that of the dorsal.

Remarks: Values in above description denote proportions.

Synonym (s)
Anthias orientalis Bloch 1793
Lutjanus aurantius Lacepede 1802
Serranus orientalis Cuvier and Valenciennes 1828
Diagramma pica Cuvier and Valenciennes 1830
Diagramma orientale Cuvier and Valenciennes
Diagramma Sibbaldi Bennett 1832
Diagramma orientale Bleeker 1850
Diagramma orientale Gunther 1859
Diagramma picoides Peters 1866
Diagramma orientale Gunther 1875
Diagramma orientale Day 1888
Plectorhynchus orientalis Bleeker 1877
Plectorhynchus orientalis Jordan and Richardson 1908

Common Name (s)
Economic Importance and Threats



• INDIA (Record: 1936)

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Weber, M; Beaufort, LF (1936) The fishes of the Indo-Australian Archipelago Print times, Pataudi house, Daryaganj, New Delhi 7 607 pp Available at - NIO, Goa

Page last updated on:2009-10-16

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