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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.


Palau country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in Tobi and Merir (Ref. 99878).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ps.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Allen, G.R. and A.R. Emery, 1985
National Database:

Common names from other countries

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | 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 Ecología

marino asociado a arrecife; no migratorio; rango de profundidad 1 - 12 m (Ref. 7247).   Tropical; 30°N - 30°S

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | 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).

Tamaño / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm TL macho / no sexado; (Ref. 4391); common length : 9.0 cm TL macho / no sexado; (Ref. 5450)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 12; Radios blandos dorsales (total) : 15 - 17; Espinas anales: 2; Radios blandos anales: 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).

Biología     Glosario (por ej. 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 | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

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 | Referencias | Coordinador : Allen, Gerald R. | Colaboradores

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

Pesquerías: escaso valor comercial; Acuario: Acuarios públicos
FAO(Publication : search) | FishSource |

Más información

Trophic ecology
componentes alimenticios
Diet compositions
Food consumptions
Food rations
Despredadores
Ecology
Ecología
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproducción
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larva
Dinámica larvaria
Distribution
Países
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Ocurrencias, apariciones
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BRUVS - Videos
Anatomy
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Physiology
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Nutrients
Oxygen consumptions
Tipo de natación
Swimming speeds
Visual pigment(s)
Sonidos de peces
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genética
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Perfiles de acuicultura
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Ciguatera cases
Stamps, coins, misc.
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Referencias

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Fuentes de Internet

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).
Nivel trófico (Ref. 69278):  2.2   ±0.0 se; based on diet studies.
Resiliencia (Ref. 120179):  Alto, población duplicada en un tiempo mínimo inferior a 15 meses (K=0.5-1.1).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (13 of 100).
Price category (Ref. 80766):   Unknown.