South Africa country information

Common names: Daga salmon, Dusky kob, Dusky meagre
Occurrence: native
Salinity: brackish
Abundance: abundant (always seen in some numbers) | Ref:
Importance: highly commercial | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: gamefish: yes;
Comments: Occurs abundantly from Cape Agulhas to northern Natal (Ref. 4373). Prefers "linefish grounds", especially wrecks or high profile reefs associated with sand. Perhaps the premier angling species in estuaries and surf zones along the South African east coast. Status of stock indeterminate; possibly depressed; sustained landings in Natal; declining catch in the southeast coast where it is a major component of recreational and commercial linefish catch (Ref. 4332). Angling record: 73.5 kg; spearfishing record: 48.6 kg (Ref. 12484). Generally sold fresh; sometimes frozen. Also Ref. 4336, 9772, 75154.
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: Griffiths, M.H. and P.C. Heemstra, 1995
National Database:

Common names from other countries

日本黄姑鱼, Mulloway, Kob, ... more

التصنيف / Names الأسماء الشائعة | مرادفات | Catalog of Fishes(جنس, الانواع) | ITIS | CoL | WoRMS | Cloffa

> Eupercaria/misc (Various families in series Eupercaria) > Sciaenidae (Drums or croakers)
Etymology: Argyrosomus: Greek, argyros = silvered, silver + Greek, soma = body (Ref. 45335).
More on authors: Temminck & Schlegel.

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

بحري; مياه مخلوطة قاعية التغذية و المعيشة; محيطية (Ref. 51243). Tropical; 40°N - 39°S, 18°E - 155°E

التوزيع دول | مناطق الفاو | النظام البيئي | الظهور | Point map | مقدمة | Faunafri

Indo-West Pacific: African southeast coast from Cape of Good Hope to southern Mozambique; northern Indian Ocean off Pakistan and northwest coast of India; northern Pacific from southern Korea and Japan, along the Chinese coast to Hong Kong; in Australia along the entire southern seaboard from North West Cape (north of Shark Bay) in Western Australia to the Burnett River (north of Brisbane) in Queensland.

Length at first maturity / الحجم / وزن / العمر

Maturity: L_m 100.0 range ? - ? cm
Max length : 181 cm TL ذكر/ مختلط الجنس; (Ref. 11025); أعلا وزن تم نشرة: 75.0 kg (Ref. 11025)

وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي

الأشواك الظهرية (المجموع) : 10 - 11; الأشعة الظهرية الناعمة (المجموع) : 25 - 30; شوكة شرجية: 2; أشعه شرجية لينه: 7; فقرات: 25. In life, silvery grey becoming darker above and lighter below. Dorsal surface with a bluish bronze sheen that may become coppery on head. Preserved specimens vary in color according to treatment; usually grey but sometimes brown; darker above and lighter below (Ref 11025).

Adult fish found mainly near shore beyond the surf zone, occasionally going inshore. Juveniles exclusively found inshore. Juveniles recruit to estuaries at about 30 cm TL. An important food fish (Ref. 11025).

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

المرجع الرئيسي Upload your references | مراجع | المنظم | المتعاونين

Griffiths, M.H. and P.C. Heemstra, 1995. A contribution to the taxonomy of the marine fish genus Argyrosomus (Perciformes: Sciaenidae), with descriptions of two new species from southern Africa. Ichthyol. Bull., J.L.B. Smith Inst. Ichthyol. No. 65, 40 p. (Ref. 11025)

IUCN Red List Status (Ref. 130435)

في خطر (EN) (A2bd); Date assessed: 26 September 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر للأنسان

Harmless

استخدامات بشرية

مصائد: تجاري; الأستزراع المائي: تجاري; لعبة سمكه: نعم

FAO(Publication : search) | FishSource |

مزيد من المعلومات

Trophic ecology
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Diet compositions
Food consumptions
Food rations
مفتريسات

Ecology
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Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
الطول- الترددات
Mass conversions
Recruitments
Abundances

Life cycle
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Spawnings
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Egg(s)
Egg developments
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Physiology
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Diseases / Parasites
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Genetics
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Human related
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Stamps, coins, misc.

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مصادر علي الأنترنت

Estimates based on models

Preferred temperature (Ref. 115969): 16.7 - 27.8, mean 25.3 (based on 600 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00977 (0.00536 - 0.01781), b=3.07 (2.92 - 3.22), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

مستوى غذائي (Ref. 69278): 4.5 ±0.6 se; based on diet studies.

المرونه (Ref. 120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (tm=6; tmax=40; K=0.03-0.24; Fec=900,000-1 million).

Prior r = 0.30, 95% CL = 0.20 - 0.45, Based on 1 full stock assessment.

Fishing Vulnerability (Ref. 59153): High to very high vulnerability (66 of 100).

فئة السعر (Ref. 80766): Medium.

Argyrosomus japonicus (Temminck & Schlegel, 1843)