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Plectroglyphidodon johnstonianus Fowler & Ball, 1924

Johnston Island damsel
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Plectroglyphidodon johnstonianus   AquaMaps   Data sources: GBIF OBIS
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Image of Plectroglyphidodon johnstonianus (Johnston Island damsel)
Plectroglyphidodon johnstonianus
Picture by Adams, M.J.


Mozambique country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Recorded from Inhaca I. Also Ref. 5285.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mz.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Pereira, M.A.M., 2000
National Database:

Common names from other countries

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Ovalentaria/misc (Various families in series Ovalentaria) > Pomacentridae (Damselfishes) > Microspathodontinae
Etymology: Plectroglyphidodon: Greek,plektron = anything to strike with, spur + Greek, glyphis = carved + Greek, odous = teeth (Ref. 45335).
  More on authors: Fowler & Ball.

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

marien rifbewoner; standvastig; diepte 0 - 30 m (Ref. 128797).   Tropical; 30°N - 30°S

Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Point map | Introducties | Faunafri

Indo-Pacific: East Africa to the Hawaiian, Marquesan, and Pitcairn islands, north to the Ryukyu and Bonin islands, south to Lord Howe Island and Rapa. Unknown from the Red Sea, Persian Gulf and Gulf of Oman (Ref. 11441).

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm TL mannelijk / geslacht onbekend; (Ref. 11441)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 12; Dorsale zachte stralen (totaal): 17-19; Anale stekels 2; Anale zachte stralen: 16 - 18.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Adults are found clear water, inner to outer reef crests in rich coral habitat (Ref. 48636). Benthopelagic (Ref. 58302). Common in passages, frequently associated with Acropora, Stylophora, or Pocillopora coral heads or a single head of Pocillopora eydouxi (= Pocillopora grandis). Usually seen solitary (Ref. 48636). Feed on benthic algae and probably coral polyps. Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205). Diurnal species (Ref. 13550).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).

Hoofdreferentie Upload your references | Referenties | Coördinator : Allen, Gerald R. | Medewerkers

Allen, G.R., 1991. Damselfishes of the world. Mergus Publishers, Melle, Germany. 271 p. (Ref. 7247)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Niet bedreigd (LC) ; Date assessed: 23 September 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless




Gebruik door de mens

Visserij: van geen belang; Aquarium: Commercieel
FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 24.7 - 29.2, mean 28.2 (based on 2485 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5010   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02138 (0.01194 - 0.03827), b=2.96 (2.80 - 3.12), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.4   ±0.6 se; based on diet studies.
Weerstandsvermogen (Ref. 120179):  Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).