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Plectroglyphidodon johnstonianus Fowler & Ball, 1924

Johnston Island damsel
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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.

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

Teleostei (teleosts) > 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 Ecology

Marine; reef-associated; non-migratory; depth range 0 - 30 m (Ref. 128797). Tropical; 30°N - 30°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | 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).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm TL male/unsexed; (Ref. 11441)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 12; Dorsal soft rays (total): 17 - 19; Anal spines: 2; Anal soft rays: 16 - 18.

Biology     Glossary (e.g. 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).

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

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).

Main reference Upload your references | References | Coordinator : Allen, Gerald R. | Collaborators

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

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 23 September 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest; aquarium: commercial
FAO - Publication: search | FishSource |

More information

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Ecology
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References

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 24.7 - 29.2, mean 28.2 °C (based on 2485 cells).
Phylogenetic diversity index (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).
Trophic level (Ref. 69278):  3.4   ±0.6 se; based on diet studies.
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
Nutrients (Ref. 124155):  Calcium = 91.4 [46.7, 145.6] mg/100g; Iron = 0.68 [0.40, 1.10] mg/100g; Protein = 18.6 [17.4, 19.7] %; Omega3 = 0.114 [0.069, 0.182] g/100g; Selenium = 21.5 [12.4, 40.0] μg/100g; VitaminA = 92.1 [27.5, 293.1] μg/100g; Zinc = 1.43 [0.97, 2.06] mg/100g (wet weight);