Pycnochromis alleni, Allen's chromis

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Pycnochromis alleni (Randall, Ida & Moyer, 1981)

Allen's chromis
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Pycnochromis alleni
Photo von Randall, J.E.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

> Ovalentaria/misc (Various families in series Ovalentaria) > Pomacentridae (Damselfishes) > Chrominae
Eponymy: Dr Gerald Robert ‘Gerry’ Allen (d: 1942) is an American-born Australian ichthyologist. [...] (Ref. 128868), visit book page.
More on authors: Randall, Ida & Moyer.

Environment: milieu / climate zone / Tiefenbereich / distribution range Ökologie

seewasser riff-verbunden; standorttreu; tiefenbereich 10 - 30 m (Ref. 559). Temperate

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Punkt Karte | Einführungen | Faunafri

Northwest Pacific: Miyake-jima, Bonin Islands of Japan and south to Taiwan.

Size / Gewicht / Alter

Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 6.5 cm SL Männchen/unbestimmt; (Ref. 7247)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 11 - 12; Rückenflossenweichstrahlen (insgesamt) : 12 - 13; Afterflossenstacheln: 2; Afterflossenweichstrahlen: 12 - 13. Overall color is brown with a prominent black spot on the base of the pectoral fin. Caudal fin and peduncle white.
Body shape (shape guide): short and / or deep; Cross section: compressed.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Adults inhabit coral or rocky outer reefs (Ref. 7247). Diurnal species (Ref. 52881). 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).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | 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).

Hauptreferenz Upload your references | Referenzen | Koordinator : Allen, Gerald R. | Partner

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

IUCN Rote Liste Status (Ref. 130435: Version 2025-1)

  nicht bedroht (LC) ; Date assessed: 16 November 2010

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

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Mehr Information

Trophic ecology
Food items (preys)
Nahrungszusammensetzung
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Food rations
Räuber
Ökologie
Ökologie
Home ranges
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Längenhäufigkeiten
Mass conversion
Rekrutierung
Dichte
Life cycle
Fortpflanzung
Geschlechtsreife
Maturity/Gills rel.
Fecundity
Ablaichen
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Eier
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Genetik
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Tools

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Zusammenfassung | Point data | Namen | Photos

Internet Quellen

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher Einträge suchen | CISTI | Catalog of Fishes: Gattung, Arten | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | Nationale Datenbanken | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Gehe zu, Suchen | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 21.6 - 26.6, mean 23.5 °C (based on 14 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02089 (0.00944 - 0.04623), b=2.98 (2.80 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.4   ±0.45 se; based on food items.
Widerstandsfähigkeit (Ref. 120179):  hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100). 🛈