Pseudobalistes fuscus   (Bloch & Schneider,  1801) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Max. size: 55.0 cm TL

Dark brown, scales with yellow spot. Pectoral, soft dorsal, anal and caudal fins dark with yellow margins. Juveniles yellowish brown with bluish grey spots and blotches. Juveniles under about 5 cm, tan with dark saddles and numerous dark wavy lines on the body. Larger juveniles loose the dark saddles and become covered in a network of brilliant blue lines which become increasingly interconnected with growth. Dorsal spines (total): 3, Dorsal soft rays (total): 24 - 27, Anal spines: 0, Anal soft rays: 19 - 24.

Dioecious, external fertilisation, guarders, nesters. Distinct pairing. Nest-guarding females are aggressive.

Synonym (s)
Balistes fuscus Bloch & Schneider, 1801
Balistes rivulatus Ruppell, 1837
Balistes caerulescens Ruppell, 1829

Common Name (s)
• Blue Triggerfish (English)
• Yellow-Spotted Triggerfish (English)
• Ripled Trigger Fish (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries, aquarium, Marketed fresh and dried-salted)

Habitat:  Reef Associated, Sandy
Trophic Level:  Secondary Consumer
Prey:  Zoobenthos, detritus, sponges, hard corals, sea urchins, crustaceans, molluscs, dead fish, tunicates or corals


• Andaman and Nicobar Islands, Andaman Islands (Lat: 12.5) (Long: 92.75) INDIA
• Andaman Sea (Lat: 13.5) (Long: 92.75) INDIA (Record: 02/1985-06/1987)

Literature Source(s)
  • Devi, K and Rao, DV (2003) Poisonous and venomous fishes of Andaman Islands, Bay of Bengal Occasional paper no 211 Records of The Zoolgical Survey of India ZSI, Calcutta 25934 Available at - NCL, Pune
  • Rouphael, T; Turak, E and Jon, B Seagrasses and mangroves of Yemen's Red Sea 41-89
  • Heemstra, E; Heemstra, P; Smale, M; Hoopers, T and Pelicier, D (2004) Preliminary checklist of coastal fishes from the Mauritian island of Rodrigues Journal of natural history Taylor and Francis 38(23-24) 3315 - 3350 Available at - index/
  • Letourneur, Y; Chabanet, P; Durville, P; Taquet, M; Teissier, E; Parmentier, M; Quero, JC and Pothin, K (2004) An updated checklist of the marine fish fauna of Reunion Island, south-western Indian Ocean Cybium 28(3) 199-216
  • Kemp, JM (1998) Zoogeography of the coral reef fishes of the Socotra Archipelago Journal of Biogeography 25 919-933
  • Allen, GR (2005) Reef fishes of northwestern Madagascar RAP Bulletin of Biological Assessment 31 39-48
  • Allen, GR and Mohammed, A (2003) Coral Reef Fishes of Indonesia Zoological Studies 42(1) 26299 Available at - Digital Information Resource Center, Pune.
  • Rodney, J (1985) Population fluctuations in some ornamental fishes and invertebrates off Sri Lanka Proceedings of the symposium on endangered marine animals and marine parks Marine Biological Association of India, Cochin 1 355-366 Available at - NIO, Goa
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at -
  • Fischer, W and Bianchi, G (Eds.) (1984) FAO species identification sheets for fishery purposes. Western Indian Ocean; (Fishing area 51). FAO, Rome 1 Available at -
  • Balachandran, K and Nizar, MA (1990) A check list of fishes of the Exclusive Economic Zone of India collected during the research cruises of FORV Sagar Sampada Proceedings of the first workshop on scientific results of FORV Sagar Sampada CMFRI, Cochin 305-324 Available at -

Page last updated on:2011-02-07

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