South Africa country information

Common names: Natal knifejaw, Nataise kraaibek, Natalse kraaibek
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: commercial | Ref: van der Elst, R., 1993
Aquaculture: | Ref:
Regulations: no regulations | Ref: van der Elst, R., 1993
Uses: gamefish: yes;
Comments: Occurs in Natal. Status of stock indeterminate; locally vulnerable to spearfishing; no commercial value; minor component of recreational anglers' catch (Ref. 4332). Angling record: 2.2 kg; spearfishing record: 3.0 kg (Ref. 12484).
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: van der Elst, R.P. and F. Adkin (eds.), 1991
National Database:

Common names from other countries

Perico de Natal, Nataise kraaibek, Natal-knivkæbefisk, ... more

رده بندی / Names اسامي عام | مترادف | Catalog of Fishes(جنس, گونه ها) | ITIS | CoL | WoRMS | Cloffa

> Centrarchiformes (Basses) > Oplegnathidae (Knifejaws)
Etymology: Oplegnathus: Greek, hoplon = weapon + Greek, gnathos = jaw (Ref. 45335).
More on author: Regan.

Environment: milieu / climate zone / depth range / distribution range بوم شناسي

دريايي وابسته به آب سنگ; تغييرات عمق 20 - 100 m (Ref. 4387). Subtropical

پراكنش كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | Point map | معرفي | Faunafri

Western Indian Ocean: occurs only in Mozambique and Natal, South Africa.

Size / Weight / سن

Maturity: L_m ? range ? - ? cm
Max length : 60.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 4387); common length : 40.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 9660)

توصيف مختصر كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري

خارهاي باله پشتي (کل) : 11; شعاع نرم باله پشتي (کل) : 20 - 24; خارهاي باله مخرجي: 3; شعاع نرم باله مخرجي: 14 - 17. Adults dark grey in color; juveniles yellow with black bars (very similar to young Diplodus cervinus hottentotus.

Occur in coastal rocky and coral reefs to a depth of 100 m; juveniles pelagic in currents (Ref. 4332). Benthic omnivores. May live longer than 10 years. Spawning occurs throughout the year (Ref. 57746). Marketed fresh (Ref. 9660).

Life cycle and mating behavior Maturities | تولید مثل | Spawnings | Egg(s) | Fecundities | توزاد ( لارو)

مآخذ اصلی Upload your references | مراجع | هماهنگ كننده | همكاران

Heemstra, P.C., 1986. Oplegnathidae. p. 632-633. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4387)

وضعيت در فهرست قرمز IUCN (Ref. 130435)

غيرقابل ارزيابی

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر برای انسان ها

Harmless

استفاده انسانی

ماهي گيري – شيلات: تجاري; ماهي ها ي سرگرم كننده: بله

FAO(Publication : search) | FishSource |

اطلاعات بيشتر

Trophic ecology
اقلام غذايي
Diet compositions
Food consumptions
Food rations
شکارچیان

Ecology
بوم شناسي
Home ranges

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversions
Recruitments
Abundances

Life cycle
تولید مثل
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
توزاد ( لارو)
پويايي لاروي

Distribution
كشورها
مناطق سازمان خوار و بار جهاني (FAO)
Ecosystems
ظهور
معرفي
BRUVS - Videos

Anatomy
Gill areas
مغزها
Otoliths

Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
صداهاي ماهي ها
Diseases / Parasites
Toxicities (LC50s)

Genetics
ژنتيك
Electrophoreses
Heritabilities

Human related
Aquaculture systems
نمايه هاي آبزي پروري
نژادها
Ciguatera cases
Stamps, coins, misc.

Outreach
همكاران

Taxonomy
اسامي عام
مترادف
ريخت شناسي
ريخت ستجي بوسيله انداره گيري
عکس ها

References
مراجع

ابزارها

گزارش های ويژه

راجع به نگهداری آکواريم ملاحظه کنيد | برگه اطلاعات و مشخصات گونه ها را ملاحظه کنيد | برگه اطلاعات و مشخصات آبزی پروری را ببينيد

بارگيری XML

صفحه خلاصه | Point data | اسامي عام | تصاوير

منابع اينترنتي

Estimates based on models

Preferred temperature (Ref. 115969): 23.6 - 26.7, mean 25.8 (based on 16 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.42 se; based on food items.

جهندگی (Ref. 120179): پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (tmax > 10).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (44 of 100).

طبقه قيمت (Ref. 80766): Unknown.

Oplegnathus robinsoni Regan, 1916