Pycnochromis iomelas, Half-and-half chromis : fisheries, aquarium

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Pycnochromis iomelas (Jordan & Seale, 1906)

Half-and-half chromis
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Pycnochromis iomelas
Picture by Allen, G.R.

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

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

Environment: milieu / climate zone / distribuzione batimetrica / distribution range Ecologia

marino associati a barriera corallina; non migratori; distribuzione batimetrica 3 - 35 m (Ref. 7247). Tropical

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Mappa dei ritrovamenti | Introduzioni | 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 / Peso / Age

Maturità: Lm ?  range ? - ? cm
Max length : 8.0 cm FL maschio/sesso non determinato; (Ref. 5525)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 12; Raggi dorsali molli (totale) : 13 - 14; Spine anali: 2; Raggi anali molli: 13 - 14.
Body shape (shape guide): short and / or deep; Cross section: compressed.

Biologia     Glossario (es. 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 Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

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 | Bibliografia | Coordinatore : Allen, Gerald R. | Collaboratori

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

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Least Concern (LC) ; Date assessed: 01 August 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesca: commerciale; Acquario: Commerciale
FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Food items (preys)
Alimentazione
Consumo di cibo
Food rations
Predatori
Ecologia
Ecologia
Home ranges
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamento
Abbondanza
Life cycle
Riproduzione
Maturità
Maturity/Gills rel.
Fecundity
Deposizione
Spawning aggregations
Uova
Egg development
Larve
Dinamica popolazioni larvali
Distribuzione
Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
BRUVS - Videos
Anatomy
Area branchiale
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetica
Genome
Genetica
Heterozygosity
Ereditarietà
Human related
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaboratori
Taxonomy
Nomi Comuni
Sinonimi
Morfologia
Morfometria
Immagini
Bibliografia
Bibliografia

Strumenti

E-book | Giuda pratica | Generatore frequenze di lunghezza | Strumento Parametri Biologici | Mappa dei ritrovamenti | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Nomi Comuni | Photos

Fonti Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Genere, Specie | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, ricerca | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Fonte Biblio. 123201): 25.3 - 27.9, mean 27 °C (based on 86 cells).
Phylogenetic diversity index (Fonte Biblio. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02188 (0.01284 - 0.03726), 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 (Fonte Biblio. 69278):  2.7   ±0.30 se; based on food items.
Resilienza (Fonte Biblio. 120179):  Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100). 🛈
Price category (Ref. 80766):   Unknown.
Nutrients (Ref. 124155):  Calcium = 136 [67, 211] mg/100g; Iron = 0.831 [0.501, 1.397] mg/100g; Protein = 18.1 [16.9, 19.3] %; Omega3 = 0.122 [0.071, 0.203] g/100g; Selenium = 24.5 [13.2, 46.3] μg/100g; VitaminA = 97.8 [26.7, 334.4] μg/100g; Zinc = 1.97 [1.32, 2.88] mg/100g (wet weight);