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Pycnochromis iomelas (Jordan & Seale, 1906)

Half-and-half chromis
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Pycnochromis iomelas
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Philippines country information

Common names: [No common name]
Occurrence: questionable
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Reported from Tubbataha Reefs (Ref. 53416). Outside distributional range, occurrence needs further verification (Ref. 92902).
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: World Wide Fund for Nature (Philippines), 2004
National Database:

Common names from other countries

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

> Ovalentaria/misc (Various families in series Ovalentaria) > Pomacentridae (Damselfishes) > Chrominae
Etymology:   More on authors: Jordan & Seale.

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

seewasser riff-verbunden; standorttreu; tiefenbereich 3 - 35 m (Ref. 7247).   Tropical

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Pacific Ocean: Great Barrier Reef and northern New Guinea to Samoa and the Society Islands (Ref. 7247). There are no valid records of this species in the western Pacific north of New Guinea, and none for the islands of Micronesia (Ref. 92902).

Size / Gewicht / Alter

Maturity: Lm ?  range ? - ? cm
Max length : 8.0 cm FL Männchen/unbestimmt; (Ref. 5525)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt): 12; Rückenflossenweichstrahlen (insgesamt): 13-14; Afterflossenstacheln 2; Afterflossenweichstrahlen: 13 - 14.

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

Adults inhabit passages and outer reef slopes, solitarily or in small groups. They are sometimes seen in mixed aggregations with the closely related species C. margaritifer (Ref. 7247). Feeds on planktons (Ref. 89972). 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. 54980; 113699).

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)

  nicht bedroht (LC) ; Date assessed: 01 August 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless




Nutzung durch Menschen

Aquarium: Kommerziell
FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 25.3 - 27.9, mean 27 (based on 86 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02188 (0.01273 - 0.03760), b=3.03 (2.88 - 3.18), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  2.7   ±0.30 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).