Haplochromis vanoijeni

Haplochromis vanoijeni de Zeeuw & Witte, 2010

अपना अपलोड करें तस्वीरें और वीडियो
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Image of Haplochromis vanoijeni
No image available for this species;
drawing shows typical species in Cichlidae.

वर्गीकरण / नाम आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Haplochromis: Greek, Haploos = single + Greek, chromis = a fish, perhaps a perch (Ref. 45335)vanoijeni: This species is named in honour of Dr. Martien J.P. van Oijen, ichthyologist of the Netherlands Centre of Biodiversity, Naturalis, in appreciation for his work on taxonomy and ecology of the haplochromine cichlids of Lake Victoria; Dr. van oijen was one of the pioneers of the Haplochromis Ecology Survey Team (HEST) of Leiden University that started its fieldwork on Lake Victoria in 1977 (Ref. 85523).
Eponymy: Martien J P van Oijen is a Dutch ichthyologist at the Naturalis Biodiversity Centre (Leiden, Netherlands). [...] (Ref. 128868), visit book page.

पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा पारिस्थितिकी

; स्वच्छ जल, अलवण जल ड़िमरसल. Tropical

वितरण प्रदेशों | ऐफ ऐ ओ क्षेत्र | पारिस्थितिकी प्रणालियों | संयोग | बिन्दु नक्शा | भूमिका | Faunafri

Africa: Lake Victoria (Ref. 85523).

आकार / वज़न / आयु

परिपक्व अवधि: Lm ?  range ? - ? cm
Max length : 8.9 cm SL पुल्लिंग / अलिंग; (Ref. 85523)

संक्षिप्त वर्णन पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स

Diagnosis: Haplochromis vanoijeni is a small sized (less than 9 cm standard length), micrognathic species with generalized body profile, but with a relatively long and acute snout; because of the latter, and its relatively small interorbital width, the species bears some resemblance with species of the 'tridens' group; indeed, it has some tricuspid teeth rostrally in the outer row of the oral jaws (Ref. 85523). It differs from eight of the nine described species in the 'tridens' group in the colouration of sexually active males: dorsum and flanks in sexually active males of Haplochromis vanoijeni are bright red; both males and females have conspicuously silverish-white cheeks, contrasting with the remaining head colours, which is a unique character among Lake Victoria haplochromines (Ref. 85523). From Haplochromis tridens, of which the colouration of live, sexually active males is unknown, it differs in the following characters: the lower jaw is shorter, lower jaw length 40.9-44.7% of head length vs. 43.3-51.8%; a larger interorbital width, 17.6-20.5% of head length vs. 15.0-19.5%; in contrast to H. vanoijeni, H. tridens has a dorsal head profile that is interrupted by a prominent premaxillary pedicel, and a cephalic line system with prominent pores (Ref. 85523). Besides by its specific colouration pattern, H. vanoijeni can be distinguished from all described species in the 'tridens' group by its larger body depth, 33.1-36.2% of standard length vs. 30.6-33.6%; the lower jaw of H. vanoijeni is shorter, 40.9-44.7% of standard length, than tah of most described species in the 'trident' group, except for that of H. cryptogramma and that of H. plutonius (Ref. 85523).
Body shape (shape guide): fusiform / normal.

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ epibenthic)

A benthic species, caught mainly in the deeper parts, more than 10 m depth, in the Mwanza Gulf, over mud bottoms; occasionally caught over mud in shallower areas (Ref. 85523). Before the ecological changes in Lake Victoria, this species fed mainly on detritus; occasionally remains of shrimps and insects were found (Ref. 85523). This species is a female mouth brooder (Ref. 85523).

जीवन चक्र और संभोग व्यवहार परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा

This species is a female mouth brooder (Ref. 85523).

मुख्य संदर्भ अपने संदर्भ अपलोड करें | संदर्भ | संयोजक : Kullander, Sven O. | सहयोगीयो

de Zeeuw, M.P., M. Mietes, P. Niemantsverdriet, S. ter Huurne and F. Witte, 2010. Seven new species of detritivorous and phytoplanktivorous haplochromines from Lake Victoria. Zool. Meded. Leiden 84:201-250. (Ref. 85523)

आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))

  असुरक्षित (VU) (D2); Date assessed: 31 March 2010

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

मनुष्यों के लिए ख़तरा

  Harmless





मानव उपयोग

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अधिक जानकारी

ट्रॉफिक पारिस्थितिकी
खाद्य पदार्थ (शिकार)
संघटक आहार
आहार खपत
खाद्यान्न राशन
परभक्षी
पारिस्थितिकी
पारिस्थितिकी
जनसंख्या गतिशीलता
विकास मापदंड
अधिकतम आयु/आकार
लंबाई-वजन संबंध
लंबाई-लंबाई संबंध
लंबाई-आवृत्तियाँ
सामूहिक रूपांतरण
भर्ती
बहुतायत
जीवन चक्र
पुनरुत्पत्ति
परिपक्व अवधि
परिपक्वता/गिल्स संबंध
उपजाऊपन
मछलीऔ का अंडे देना
स्पॉनिंग एकत्रीकरण
अंडे
अंडे का विकास
लार्वा
लारवल गतिकी
शरीर रचना
गिल क्षेत्र
दिमाग
ओटोलिथ
फिजियोलॉजी
शारीरिक संरचना
पोषक तत्व
प्राणवायु की खपत
तैराकी का प्रकार
तैराकी की गति
दृश्य वर्णक
मछली की आवाज
रोग एवं परजीवी
विषाक्तता (LC50s)
आनुवंशिकी
जीनोम
आनुवंशिकी
विषमयुग्मजी
हैरेटिबिलटी
आनुवंशिक विविधता
मानव संबंधी
जलकृषि प्रणालियाँ
जलीयकृषि रूपरेखाऐ
खींच
सिगुएटेरा के मामले
टिकट, सिक्के, विविध.
आउटरीच
सहयोगीयो
वर्गीकरण
आम नाम
उपशब्द
आकृति विज्ञान
मौरफोमैटरिक्स
तस्वीरे
संदर्भ
संदर्भ

साधन

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मॉडल पर आधारित अनुमान

जातिवृति विविधता सूचकांक (संदर्भ 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00671 - 0.03113), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
ट्रॉफिक स्तर (संदर्भ 69278):  3.3   ±0.4 se; based on size and trophs of closest relatives
मछली पकड़ने की भेद्यता (Ref. 59153):  Low vulnerability (10 of 100). 🛈