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> Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Etymology: Petrocephalus: Latin, petra = stone + Greek, kephale = head (Ref. 45335).
More on author: Boulenger.

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

; स्वच्छ जल, अलवण जल ड़िमरसल. Tropical; 20°C - 25°C (Ref. 13614)

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

Africa: Upper and Lower Niger, the Bénuoé, coastal rivers of Nigeria.

Length at first maturity / आकार / वज़न / Age

Maturity: L_m 1.8 range ? - ? cm
Max length : 14.1 cm SL पुल्लिंग / अलिंग; (Ref. 2915)

Short description पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स

पृष्ठीय रीढ़ (सम्पूर्ण) : 0; पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 29 - 34; गुदा कांटा: 0; ऐनल सौफट रेज़: 35 - 39. Body depth 2.9-3.5 x SL, caudal peduncle depth 18.8-21.6 x SL, base of anal fin 3.1-3.4 x SL. Eye diameter 3.0-3.5 x head length. Body silvery with 1st rays of dorsal darkened and dorsal spot separate from dorsal fin.

Affinities: P. bane and P. sauvagii.

Life cycle and mating behavior Maturities | पुनरुत्पत्ति | Spawnings | Egg(s) | Fecundities | लार्वा

Main reference Upload your references | संदर्भ | संयोजक | सहयोगीयो

Bigorne, R., 1990. Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

अधिक जानकारी

Trophic ecology
खाद्य पदार्थ
Diet compositions
Food consumptions
Food rations
परभक्षी

Ecology
पारिस्थितिकी

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

Life cycle
पुनरुत्पत्ति
Maturities
Fecundities
Spawnings
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Egg(s)
Egg developments
लार्वा
लारवल गतिकी

Distribution
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ऐफ ऐ ओ क्षेत्र
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Anatomy
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Physiology
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Visual pigment(s)
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Diseases / Parasites
Toxicities (LC50s)

Genetics
आनुवंशिकी
Electrophoreses
Heritabilities

Human related
Aquaculture systems
जलीयकृषि रूपरेखाऐ
खींच
Ciguatera cases
Stamps, coins, misc.

Outreach
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इंटरनेट स्रोत

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01445 (0.00819 - 0.02552), b=2.84 (2.69 - 2.99), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

लौटाव (Ref. 120179): माध्यम, न्यूनतम जनसंख्या दुगनी होने का समय 1.4 - 4.4 वर्ष। (Fec < 1,000).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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