Pomacentrus nigricans   (Lacepede,  1802) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: The Nature Conservation and Aquatic Sciences Service

Size: 35-150 mm.

Color: Varies from light brown to dark brown, sometimes with a broad white band from posterior part of spinous dorsal to anal origin. Pectoral with a black basal spot and a black ocellus on base of posterior dorsal rays. Dorsal and anal brown, darker anteriorly. Caudal and pectoral light brown.

Head 3.0-3.2 in standard length, 3.7-4.2 in total length. Depth of body 1.9-2.1 in standard length, 2.5-2.8 in total length. Eye diameter 3.0-3.4 in head, equal to or slightly more than length of snout and more than interorbital space. Mouth oblique. Maxillary reaching beyond vertical through nostril, and almost to below front border of eye. Teeth truncate, in a single row in jaws. Preorbital and suborbital strongly denticulated. Preopercle strongly denticulated behind. Pectoral fin as long as head. Ventral fin equal to or slightly more than head, the first ray produced. Scales extending anterior to nostrils. Posterior part of preorbital and suborbital scaly. Preopercle with 3 rows of scales, its flange narrowly naked. Dorsal spines slightly increasing in length posteriorly, the last equal to snout and half eye. Membranes between the spines incised. Soft dorsal pointed, the median rays longest, and equal to head without snout. First anal spine less than half length of second, which is longer and stronger than dorsal spines and equal to post orbital part of head or somewhat longer. Anal rounded or slightly pointed, the longest rays as long as or somewhat longer than longest dorsal rays. Dorsal and anal with a deep and thick scaly sheath. Pectorals with a scaly base, more than head without snout. Ventrals with the first ray produced, as long as head. Caudal forked, the lobes rounded.
Number of spines and rays in the dorsal fin: XII, 15-16; number of spines and rays in the anal fin: II, 12-14; number of rays in the pectoral fin: ii, 17; number of spines and rays in the ventral fin: I, 5; number of scale rows along the lateral line: 18-19+8-9; number of horizontal scale rows usually counted from origin of the dorsal fin to the lateral line and from anal origin to the lateral line: 2+1+9.

Remarks: Values in above description denote proportions.

Synonym (s)
Holocentrus nigricans Lacepede, 1803
Pomacentrus nigricans de Beaufort, 1940
Pomacentrus scolopseus Quoy and Gaimard, 1824
Pomacentrus taeniops Cuvier and Valenciennes, 1830
Pomacentrus taeniops Lesson, 1830
Pomacentrus albifasciatus Schlegel and Muller, 1841
Pomacentrus cyanospilus Bleeker, 1852
Pomacentrus leucopleura Bleeker, 1854
Pomacentrus scolopsis Gunther, 1862
Eupomacentrus (Eupomacentrus) lividus Bleeker, 1877
Eupomacentrus (Brachypomacentrus) albifasciatus Bleeker, 1877
Pomacentrus scolopsis Gunther, 1881
Pomacentrus subniger de Vis, 1885
Pomacentrus scolopsis Steindachner, 1901
Pomacentrus cyanospilus Johnstone, 1904
Pomacentrus scolopsis Steindachner, 1906
Pomacentrus nigricans Jordan and Seale, 1906
Pomacentrus nigricans Jordan and Richardson, 1908
Pomacentrus albofasciatus M. Weber, 1913
Pomacentrus albofasciatus Montalban, 1927
Pomacentrus albifasciatus Whitely, 1927
Pomacentrus nigricans Fowler and Bean, 1928
Pomacentrus nigricans Fowler, 1928
Eupomacentrus nigricans Whitley, 1929
Eupomacentrus nigricans McCulloch, 1929
Pomacentrus albofasciatus Herre, 1936

Common Name (s)
• Ryburang
• Padatham
Economic Importance and Threats
Importance:  Commercial
(Ornamental fish)

Habitat:  Reef Associated


• Lakshadweep, Andrott INDIA
• Lakshadweep, Bangaram INDIA
• Lakshadweep, Chettalatt INDIA
• Lakshadweep, Kadamatt INDIA
• Lakshadweep, Kalpeni INDIA
• Lakshadweep, Kavaratti INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep INDIA
• Lakshadweep, Chettalatt INDIA (Record: 05/01/1987-06/02/1987)
• Lakshadweep, Kadamatt INDIA (Record: 05/01/1987-06/02/1987)
• Lakshadweep, Agatti INDIA (Record: 09/02/1987-25/02/1987)
• Lakshadweep Islands INDIA (Record: 11/1993-01/1997)
• Lakshadweep, Minicoy Island (Lat: 8.11) (Long: 73.3) INDIA

Literature Source(s)
  • Wafar, MVM (2003) Checklists of reef fauna Available at - http://www.reefindia.org/
  • Jones, S and Kumaran, M (1980) Fishes of the Laccadive Archipelago The Nature Conservation and Aquatic Sciences Service, Trivandrum, Kerala 760 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Beaufort, LF (1940) The fishes of the Indo-Australian Archipelago A. J. Reprints agency, Karol Bagh, New Delhi 8 508 pp Available at - NIO, Goa
  • Murty, VS (1996) Marine ornamental fishes of India Proceedings of the Seminar on Fisheries - A Multibillion Dollar Industry, Madras CMFRI 23-34 Available at - http://eprints.cmfri.org.in/7786/1/678-Mur.pdf
  • Kumaran, M; Murty, VS and Lalmohan, RS (1989) Resources of ornamental fishes Marine living resources of the union territory of Lakshadweep: An indicative survey with suggestions for development Bulletin of Central Marine Research Institute CMFRI 43 46-64 Available at - http://eprints.cmfri.org.in/8213/1/Bulletin_No_43.pdf
  • Murty, VS (2002) Marine ornamental fish resources of Lakshadweep CMFRI Special Publication CMFRI 72 1-134 Available at - http://eprints.cmfri.org.in/3536/1/Special_Publication_No_72.pdf
  • Jones, S and Kumaran, M (1959) The fishing industry of Minicoy Island with special reference to the tuna fishery Indian Journal of Fisheries Indian Council of Agricultural Research 6 (1) 30-57 Available at - http://eprints.cmfri.org.in/1866/1/Article_04.pdf
  • Murty, VS (2001) Ornamental fish resources of Lakshadweep Bulletins of the Geological Survey of India 56 103-111 Available at - http://eprints.cmfri.org.in/8574/1/Murty.pdf
  • Pillai, PKM and Augustine, SK (2000) A code list of common marine living resources of the Indian seas CMFRI Special Publication No.12 CMFRI 1-115 Available at - eprints.cmfri.org.in/3975/1/Special_Publication_No_12_Revised.pdf

Page last updated on:2011-12-02

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