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Kyphosus cinerascens (Forsskål, 1775)

Blue sea chub
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Kyphosus cinerascens   AquaMaps   Data sources: GBIF OBIS
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Image of Kyphosus cinerascens (Blue sea chub)
Kyphosus cinerascens
Picture by Bailly, N.


Seychelles country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 1623.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/se.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Maugé, L.A., 1984
National Database:

Common names from other countries

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Centrarchiformes (Basses) > Kyphosidae (Sea chubs)
Etymology: Kyphosus: Greek, kyphos = bent (Ref. 45335).
  More on author: Forsskål.

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

Marine; reef-associated; depth range 0 - 45 m (Ref. 58652).   Tropical; 35°N - 30°S, 30°E - 140°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-Pacific: Red Sea and East Africa to the Hawaiian, Line and Tuamoto islands, north to southern Japan, south to Australia.

Length at first maturity / Size / Weight / Age

Maturity: Lm 22.6, range 23 - ? cm
Max length : 53.0 cm FL male/unsexed; (Ref. 125599); common length : 45.0 cm TL male/unsexed; (Ref. 57863); max. published weight: 3.6 kg (Ref. 125599)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 11 - 12; Anal spines: 3; Anal soft rays: 11 - 12.

Biology     Glossary (e.g. epibenthic)

Found in aggregations over hard, algal coated bottoms of exposed, surf-swept outer reef flats, lagoon and seaward reefs, to a depth of at least 24 m (Ref. 30573). Benthopelagic (Ref. 58302). Juveniles associated with floating material (Ref. 58302). Mainly herbivorous, feeding on seaweed and associated invertebrates (Ref. 30573). Appear to be more commonly involved in hallucinogenic fish poisoning than most other related species (Ref. 4690). Caught with other types of artisanal gear. Minimum depth reported taken from Ref. 128797.

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Oviparous (Ref. 101771).

Main reference Upload your references | References | Coordinator | Collaborators

Knudsen, S.W. and K.D. Clements, 2013. Revision of the fish family Kyphosidae (Teleostei: Perciformes). Zootaxa 3751(1):001-101. (Ref. 95491)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 07 July 2014

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Poisonous to eat (Ref. 4690)




Human uses

Fisheries: minor commercial
FAO(Publication : search) | FishSource | Sea Around Us

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators
Ecology
Ecology
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduction
Maturities
Fecundities
Spawnings
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Egg(s)
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Distribution
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BRUVS - Videos
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Otoliths
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Swimming type
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Visual pigment(s)
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Toxicities (LC50s)
Genetics
Genetics
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Aquaculture profiles
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Estimates based on models

Preferred temperature (Ref. 115969): 24.7 - 29, mean 27.7 (based on 854 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.01253 - 0.03176), b=3.01 (2.87 - 3.15), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  2.9   ±0.33 se; based on food items.
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (K=0.25).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (38 of 100).
Climate Vulnerability (Ref. 125649):  High vulnerability (62 of 100).
Price category (Ref. 80766):   High.