Egypt country information

Common names: Bagar, Bayad, Forskals catfish
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Bishai, H.M. and M.T. Khalil, 1997
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from the Nile River (Ref. 51686), including Lake Nasser (Ref. 3799), Lake Edkou (Ref. 31439), Lake Borollos (Ref. 4904), Lake Karoun (Ref. 4904) and only in the freshwater portion after the high Nile in Lake Menzaleh (Ref. 4904, Ref. 31439). Total production in 1996: 5826 tons, or about 9% of the total Nile catch (Ref. 51850).
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/eg.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Ita, E.O., 1984
National Database:

Classification / Names

ऐकटीनोप्टीरेजी (रेज़-फिन्नढ मछलियाँ) > Siluriformes (Catfish) > Bagridae (Bagrid catfishes)
आम नाम | उपशब्द | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Silver catfish, Black Nile catfish, Abou'chanap, ... more

Main reference

Risch, L.M. 1986. (Ref. 3236)
संदर्भ | Biblio | संयोजक | सहयोगीयो

आकार / वज़न / Age

Max length : 112 cm FL पुल्लिंग / अलिंग; (Ref. 43434); common length : 50.0 cm TL पुल्लिंग / अलिंग; (Ref. 13851); अधिकतम प्रकाशित वज़न: 12.5 kg (Ref. 43434); अधिकतम सूचित उम्र: 8 वर्षो (Ref. 51644)

Length at first maturity
L_m 41.2, range 29 - 34 cm

पर्यावरण

; स्वच्छ जल, अलवण जल ड़िमरसल; पोटामोड़िरोमस (Ref. 51243); गहराई सीमा ? - 60 m (Ref. 43507)

जलवायु / सीमा

Tropical; 22°C - 28°C (Ref. 12468), preferred ?

वितरण

Africa: Nile River, Lake Chad, Niger and Senegal River, Lakes Mobutu (Lake Albert) and Turkana. Reported from Sanaga River basin (Ref. 27691).
देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | भूमिका

Short description

पृष्ठीय रीढ़ (सम्पूर्ण): 1; पृष्ठीय सौफट रेज़ (सम्पूर्ण): 8-12; गुदा कांटा 0; ऐनल सौफट रेज़: 13 - 15; जानवरों की रीड़ का जोड़: 48 - 53. Diagnosis: body rather elongate, 5-6 times longer than deep (Ref. 7324, 57125); occipital process 4-6 times longer than broad (Ref. 57125). 9-11 branched dorsal-fin rays (Ref. 57125), the first prolonged into short filaments (Ref. 13851, 31256, 57125). Longest filament comprised 3-4 times in standard length (Ref. 7324, 57125). Predorsal length 2.4-2.6 times in standard length; head width 1.7-2.2 times in head length; width of premaxillary tooth plate 2.5-2.8 times in head length; caudal-fin lobes often prolonged into short filaments; upper caudal-fin lobe comprised 2-3 times in standard length (Ref. 57125).

Found in lakes, swamps and rivers (Ref. 31256). Avoids salt water (Ref. 31439). Spends nearly the whole of the daylight hours in crevices of rocks and is therefor seldom seen (Ref. 51850). Lives and feeds on or near the bottom (Ref. 3034). Adults exclusively piscivorous (Ref. 31256). Preys on small fish, particularly Alestes spp. (Ref. 13851), or Chrysichthys auratus as in Lake Kainji (Ref. 3034); also feeds on insects, crustaceans, mollusks, vegetable matter (Ref. 28714). Efficiency of catching prey catfish is maximised by face to face attack, avoiding damage by dorsal and pectoral spines of the prey (Ref. 33614). There is some indication that the species comes to shallower water to breed (Ref. 43507). Spawning season extends from April to July (Ref. 51850). Parents build and guard the nest, which is like a flat disc with a central hole where the eggs are dropped (Ref. 51638). Size of the nest and the central hole depend on the fish size (Ref. 51638). Males become up to 7 years old, females 8 years (Ref. 51644). Mean sizes and weight of males are less than those of females from the same age (Ref. 51644, Ref. 51645). An important food fish. Flesh is good eating and of economic importance (Ref. 36900), commonly sold as food (Ref. 43521). Reputed to reach 100,000 g.

IUCN Red List Status (Ref. 115185)

Least Concern (LC)

Threat to humans

Harmless

Human uses

मात्स्यिकी: व्यापारिक; आखेट मत्स्य: हां

अधिक जानकारी

देश
ऐफ ऐ ओ क्षेत्र
Ecosystems
संयोग
भूमिका
Stocks
पारिस्थितिकी
आहार
खाद्य पदार्थ
आहार खपत
खोराक

आम नाम
उपशब्द
चपायचय
परभक्षी
ईकोटोकसीकोलौजी
पुनरुत्पत्ति
परिपक्व अवधि
मछलीऔ का अंडे देना
Fecundity
अंडे
Egg development

Age/Size
बाढ़
Length-weight
Length-length
Length-frequencies
मौरफोमैटरिक्स
आकृति विज्ञान
लार्वा
लारवल गतिकी
भर्ती
बहुतायत

संदर्भ
जलीयकृषि
जलीयकृषि रूपरेखा
खींच
आनुवंशिकी
ऐल्लि आवृतियाँ
हैरेटिबिलटी
बीमारी
प्रक्रमण
Mass conversion

सहयोगीयो
तस्वीरे
Stamps, Coins
ध्वनि
सिगुयटिरा
रफ्तार
तैरने के प्रकार
गिल क्षेत्र
Otoliths
दिमाग
दृष्टि

साधन

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | आम नाम | Photos

इंटरनेट स्रोत

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5005 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
4.0 ±0.2 se; Based on diet studies.

लौटाव (Ref. 69278)
निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (tm=4-5; tmax=8; K=0.07-0.18; Fec=18,630-47,920)

Vulnerability (Ref. 59153)
Moderate to high vulnerability (52 of 100)

Price category (Ref. 80766)
Unknown

Bagrus bajad (Forsskål, 1775)