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Ctenochaetus binotatus Randall, 1955

Twospot surgeonfish
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Native range | All suitable habitat | Point map | Year 2050
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Ctenochaetus binotatus   AquaMaps   Data sources: GBIF OBIS
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Image of Ctenochaetus binotatus (Twospot surgeonfish)
Ctenochaetus binotatus
Picture by Randall, J.E.


Philippines country information

Common names: Labahita, Twospot bristletooth, Uyuy
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Recorded from Lanuza Bay (Ref. 104756), Calatagan and Nasugbu, Batangas (Ref. 107853), Dauin-Apo I. (Ref. 127519), Malalag Bay, Davao Gulf, Bongo Island and Paril-Sangay Protected Seascape, Moro Gulf (Ref. 106380). Also recorded from (San Luis, Bauan, Mabini, Lobo, San Juan) Batangas, between 3-7 m deep from Feb. - April 2014 (Ref. 107629). Also from Verde Island (Ref. 107855, 107854). Type locality, Pagapas Bay, Luzon (Ref. 5439). Also collected from Solino I.; Zamboanga del Norte; Cagayan Is.; Cebu, Mactan I.; Cuyo Is. (Ref. 42056) and Bulata, Negros Occidental (Ref. 58652), Tañon Strait (Ref. 107276) and Bantayan Is. in northern Cebu (Ref. 114734). Also Ref. 1602, 107852, 121724.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/rp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Werner, T.B. and G.R. Allen, 2000
National Database:

Common names from other countries

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Acanthuriformes (Surgeonfishes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Ctenochaetus: Greek, kteis, ktenos = comb + Greek, chaite = hair (Ref. 45335);  binotatus: Name from Latin 'bi' meaning two and 'notatus' meaning marked; referring to the black spots at the rear base of the dorsal and anal fins..
  More on author: Randall.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 0 - 60 m (Ref. 128797), usually 10 - 50 m (Ref. 27115).   Tropical; 24°N - 34°S, 29°E - 122°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-Pacific: East Africa to the Tuamoto Islands, north to southern Japan, south to central New South Wales (Australia) and New Caledonia. Not known from the Red Sea, Gulf of Oman, the Gulf, the Hawaiian Islands, Marquesas, Rapa, Pitcairn Islands, and Easter Island.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 22.0 cm TL male/unsexed; (Ref. 5213)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 8; Dorsal soft rays (total): 24 - 27; Anal spines: 3; Anal soft rays: 22 - 25. Prominent black spot at the rear base of dorsal and anal fins; adults with a bluish ring around the eye (Ref 1602). Dorsal and anal fins dark brown. Caudal fin brown in adults, yellow in young. Edge of lips smooth. Upper teeth usually with 5 denticulations (not including tip). Anterior gill rakers 23-29 (Ref 42056).

Biology     Glossary (e.g. epibenthic)

Inhabits coral and rubble areas of deep lagoon and seaward reefs. Usually solitary, grazing on surface algae (Ref. 90102). Feeds by scooping film of detritus and unicellular algae (e.g. dinoflagellate Gambierdiscus toxicus) that produce ciguatera toxin making this species a key link in the ciguatera food chain (Ref. 1602, 48637). Caught with nets (Ref. 30573).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator : Randall, John E. | Collaborators

Randall, J.E and K.D. Clements, 2001. Second revision of the surgeonfish genus Ctenochaetus (Perciformes: Acanthuridae), with descriptions of two new species. Indo-Pac. Fish. (32):33 p. (Ref. 42056)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 07 May 2010

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Other (Ref. 1602)




Human uses

Fisheries: commercial; aquarium: commercial
FAO(Publication : search) | FishSource | Sea Around Us

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
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Predators
Ecology
Ecology
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Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
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Recruitments
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Life cycle
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Egg(s)
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Distribution
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BRUVS - Videos
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Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetics
Electrophoreses
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Aquaculture profiles
Strains
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Stamps, coins, misc.
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Estimates based on models

Preferred temperature (Ref. 115969): 24.5 - 28.9, mean 27.7 (based on 1034 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03388 (0.02158 - 0.05321), b=2.93 (2.80 - 3.06), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  2.0   ±0.00 se; based on food items.
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (12 of 100).
Price category (Ref. 80766):   Medium.