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Dichistius capensis (Cuvier, 1831)

Galjoen
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Native range | All suitable habitat | Point map | Year 2050
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Dichistius capensis   AquaMaps   Data sources: GBIF OBIS
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Dichistius capensis
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South Africa country information

Common names: Galjoen, Galjoen
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: subsistence fisheries | Ref: van der Elst, R., 1993
Aquaculture: | Ref:
Regulations: protected | Ref: van der Elst, R., 1993
Uses: gamefish: yes;
Comments: South Africa's national fish. Occurs from the west coast to Sodwana Bay. Stock sound but vulnerable; stabilized since decommercialization (Ref. 4332). Specific catch restrictions: closed season applies; not to be sold; minimum legal size: 35 cm TL (Ref. 12484). Angling record: 6.5 kg; spearfishing record 5.2 kg (Ref. 12484). Also Ref. 5213.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Smith, M.M., 1986
National Database:

Common names from other countries

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

> Centrarchiformes (Basses) > Dichistiidae (Galjoen fishes)
Etymology: Dichistius: Greek, dichao, dichasis = divided in two parts (Ref. 45335).
  More on author: Cuvier.

Environment: milieu / climate zone / depth range / distribution range 生態学

関連する礁; 深さの範囲 10 - ? m (Ref. 5213).   Subtropical; 12°S - 36°S, 10°E - 34°E

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Southeast Atlantic to southwestern Indian Ocean: southern Angola to Natal, South Africa.

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 34.0  range ? - ? cm
Max length : 80.0 cm TL オス/雌雄の選別がない; (Ref. 4370); 最大公表体重: 6.5 kg (Ref. 4370)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 10; 背鰭 (合計): 18-19; 肛門の骨 3; 臀鰭: 13 - 14. Changes from black to silver almost instantly to blend with environment; occasionally mottled or with 7-9 crossbars (Ref. 4370).

生物学     用語集 (例 epibenthic)

Found in inshore reefs, rocky and sandy areas. Feeds on mollusks, crustaceans, and other invertebrates (Ref. 5213). Abundant in winter, breeding occurs in deeper water. Becoming scarce because of overfishing (Ref. 36731).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Smith, M.M., 1986. Coracinidae. p. 601-602. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4370)

IUCNのレッドリストの状況は (Ref. 130435)


CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

水産業: 商業; ゲームフィッシュ: はい
FAO(Publication : search) | FishSource |

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インターネットの情報源

Estimates based on models

Preferred temperature (Ref. 115969): 14.4 - 24.7, mean 16.7 (based on 20 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01622 (0.00664 - 0.03964), b=3.01 (2.79 - 3.23), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (Ref. 69278):  3.3   ±0.45 se; based on food items.
回復力 (Ref. 120179):  低い, 4.5年~14年の倍増期間の最小個体群 (K=0.13).
Fishing Vulnerability (Ref. 59153):  High vulnerability (60 of 100).
価格帯 (Ref. 80766):   Unknown.