Kyphosus cinerascens, Blue sea chub : fisheries, gamefish

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.

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 Territories | 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.
Body shape (shape guide): fusiform / normal; Cross section: compressed.

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 Maturity | Reproduction | Spawning | Eggs | Fecundity | 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: Version 2025-2 (Global))

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

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Poisonous to eat (Ref. 4690)





Human uses

Fisheries: minor commercial; gamefish: yes
FAO - Publication: search | FishSource | Sea Around Us

More information

Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Distribution
Territories
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos
Anatomy
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genome
Genetics
Heterozygosity
Heritability
Genetic Diversity
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Outreach
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Taxonomy
Common names
Synonyms
Morphology
Morphometrics
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References
References

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Special reports

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Summary page | Point data | Common names | Photos

Internet sources

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

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.01995 (0.01242 - 0.03205), 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.
Generation time 4.4 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
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.
Nutrients
(Ref. 124155) 		Calcium = 43.6 [27.1, 58.6] mg/100g; Iron = 0.56 [0.38, 0.86] mg/100g; Protein = 19 [18, 20] %; Omega3 = 0.123 [0.091, 0.167] g/100g; Selenium = 34.6 [22.7, 54.6] μg/100g; VitaminA = 63.4 [24.5, 160.6] μg/100g; Zinc = 1.27 [0.97, 1.64] mg/100g (wet weight);