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Stegastes nigricans (Lacepède, 1802)

Dusky farmerfish
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Native range | All suitable habitat | Point map | Year 2050
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Stegastes nigricans   AquaMaps   Data sources: GBIF OBIS
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Image of Stegastes nigricans (Dusky farmerfish)
Stegastes nigricans
Picture by Randall, J.E.


Fiji country information

Common names: Guru ni veilase
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/fj.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/fiji/fiji.htm
Occurrences: Occurrences Point map
Main Ref: Allen, G.R. and A.R. Emery, 1985
National Database:

Common names from other countries

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

> Ovalentaria/misc (Various families in series Ovalentaria) > Pomacentridae (Damselfishes) > Microspathodontinae
Etymology: Stegastes: Greek, stegastos, -e, -on = covered (Ref. 45335).
  More on author: Lacepède.

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

marino associati a barriera corallina; non migratori; distribuzione batimetrica 1 - 12 m (Ref. 7247).   Tropical; 30°N - 30°S

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Indo-Pacific: Red Sea and East Africa to the Line, Marquesas, and Tuamoto islands, north to the Ryukyu and Bonin islands, south to New Caledonia and Tonga; throughout Micronesia. Excluding the Hawaiian Islands (Ref. 7247). Hawaiian population refers to Stegastes marginatus (Ref. 86689).

Size / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm TL maschio/sesso non determinato; (Ref. 4391); common length : 9.0 cm TL maschio/sesso non determinato; (Ref. 5450)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 12; Raggi dorsali molli (totale) : 15 - 17; Spine anali: 2; Raggi anali molli: 12 - 14. Diagnosis: Adults generally brown; dorsal part of head and nape darker, grading to tan on lower part of head and breast. The scales have darker brown margins. The lips are whitish lips; the suborbital is mostly blue; the preopercle and opercle scales with blue centers. The median and pelvic fins are brown; the pectorals are dusky; a well-defined dark brown or blackish spot is sometimes present at base of posteriormost dorsal rays, which distinguishes it from S. lividus where the spot is diffuse. Males in courtship or guarding eggs with broad white bar across middle of body and pale blue stripe from mouth to upper part of pectoral fin (Ref. 510).

Biologia     Glossario (es. epibenthic)

Adults inhabit reef flats and lagoon reefs. Frequently occur in colonies associated with live or dead branching staghorn coral (Acropora). Feed on algae, gastropods, sponges, and copepods. Territorial, maintain and 'weed' filamentous algae patches growing on dead coral (Ref. 9710). They attack human intruders without hesitation, sometimes taking painful nips. Particularly aggressive during reproductive periods. The species emit clicking noises during aggressive encounters. Oviparous, males tend the nest visited by several females (Ref. 59295).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | 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. and A.R. Emery, 1985. A review of the Pomacentrid fishes of the genus Stegastes from the Indo-Pacific, with descriptions of two new species. Indo-Pac. Fish. (3):31. (Ref. 510)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 04 October 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Traumatogenic (Ref. 510)




Human uses

Pesca: scarso interesse commerciale; Acquario: Acquari pubblici
FAO(Publication : search) | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori
Ecology
Ecologia
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Riproduzione
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larve
Dinamica popolazioni larvali
Distribution
Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
BRUVS - Videos
Anatomy
Gill areas
Cervelli
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Suoni dei Pesci
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetica
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaboratori
References
Bibliografia

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Estimates based on models

Preferred temperature (Ref. 115969): 25 - 29.3, mean 28.4 (based on 3006 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02399 (0.01480 - 0.03888), b=3.02 (2.88 - 3.16), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  2.2   ±0.0 se; based on diet studies.
Resilienza (Ref. 120179):  Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (K=0.5-1.1).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (13 of 100).
Price category (Ref. 80766):   Unknown.