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Dichistius capensis (Cuvier, 1831)

Galjoen
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Dichistius capensis   AquaMaps   Data sources: GBIF OBIS
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Image of Dichistius capensis (Galjoen)
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

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > 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 生态学

海洋 礁区鱼类; 深度上下限 10 - ? m (Ref. 5213).   亞熱帶的; 12°S - 36°S, 10°E - 34°E

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Southeast Atlantic to southwestern Indian Ocean: southern Angola to Natal, South Africa.
東南大西洋: 南方的安哥拉到南非的納塔爾。

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm 34.0  range ? - ? cm
Max length : 80.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 4370); 最大体重: 6.5 kg (Ref. 4370)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 10; 背的软条 (总数): 18-19; 臀棘 3; 臀鳍软条: 13 - 14. Changes from black to silver almost instantly to blend with environment; occasionally mottled or with 7-9 crossbars (Ref. 4370).
改变从黑色到银色的几乎立即地以环境混合; 偶然有斑点或具有 7-9个交叉的条纹.(参考文献 4370)

生物学特性     字汇 (例如 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).

发现于近海岩礁,岩石及沙地区域了。 吃软件动物,甲壳动物与其他的无脊椎动物。 (参考文献 5213) 丰富的冬天时,繁殖出现于较深的水域中。 变成难得的由于捕捞过度。 (参考文献 36731)

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼

東南大西洋: 南方的安哥拉到南非的納塔爾。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

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)

世界自然保护联盟红皮书 (Ref. 130435)

  不评价 

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的




人类利用

渔业: 商业性; 游钓鱼种: 是的
FAO(Publication : search) | FishSource |

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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).
营养阶层 (Ref. 69278):  3.3   ±0.45 se; based on food items.
回复力 (Ref. 120179):  低的, 最小族群倍增时间4.5 - 14 年 (K=0.13).
Fishing Vulnerability (Ref. 59153):  High vulnerability (60 of 100).
价格分类 (Ref. 80766):   Unknown.