Haplochromis vanoijeni de Zeeuw & Witte, 2010
Ladda upp din foton och Videor
Google image
No image available for this species;
drawing shows typical species in Cichlidae.
Google image
drawing shows typical species in Cichlidae.
Klassificering / Namn Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | 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.
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.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde Ekologi
; sötvatten bottenlevande. Tropical
Utbredning Territorier | FAO områden | Ekosystem | Förekomster | Prickkarta | Utplanteringar | Faunafri
Africa: Lake Victoria (Ref. 85523).
Storlek / Vikt / Ålder
Kort beskrivning Bestämningsnycklar | Morfologi | Morfometri
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.
Body shape (shape guide): fusiform / normal.
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).
Livscykel och parningsbeteende Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
This species is a female mouth brooder (Ref. 85523).
Huvudreferens
Ladda upp dina referenser | referenser | Koordinator : Kullander, Sven O. | Medarbetare
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Sårbar (VU) (D2); Date assessed: 31 March 2010
CITES
Not Evaluated
Hot mot människor
Harmless
Mänskliga användningsområden
FAO - Publication: search | FishSource |
Ytterligare information
Populationsdynamik
Tillväxtparametrar
Max. åldrar / storlekar
Längd-vikt rel.
Längd-längd rel.
Längd-frekvenser
Massakonvertering
Rekrytering
Abundans
Tillväxtparametrar
Max. åldrar / storlekar
Längd-vikt rel.
Längd-längd rel.
Längd-frekvenser
Massakonvertering
Rekrytering
Abundans
Livscykel
Reproduktion
Könsmognad
Mognad/Gills rel.
Fekunditet
Lek
Lekande aggregat
Ägg
Utveckling av ägg
Larver
Larvdynamik
Reproduktion
Könsmognad
Mognad/Gills rel.
Fekunditet
Lek
Lekande aggregat
Ägg
Utveckling av ägg
Larver
Larvdynamik
Anatomi
Gälyta
Hjärna
Otolit
Gälyta
Hjärna
Otolit
Fysiologi
Kroppssammansättning
Näringsämnen
Syreförbrukning
Typ av simning
Simhastighet
Visuella pigment
Ljud från fisk
Sjukdomar & Parasiter
Toxicitet (LC50)
Kroppssammansättning
Näringsämnen
Syreförbrukning
Typ av simning
Simhastighet
Visuella pigment
Ljud från fisk
Sjukdomar & Parasiter
Toxicitet (LC50)
Genetik
Genom
Genetik
Heterozygositet
Ärftlighet
Genetisk mångfald
Genom
Genetik
Heterozygositet
Ärftlighet
Genetisk mångfald
Människorelaterad
Vattenbrukssystem
Vattenbruksprofiler
Avelslinjer
Ciguatera-fall
Frimärken, mynt, diverse.
Vattenbrukssystem
Vattenbruksprofiler
Avelslinjer
Ciguatera-fall
Frimärken, mynt, diverse.
Verktyg
Särskilda rapporter
Kontrollera för underhåll av akvarium | Kontrollera om det finns faktablad om arter | Kontrollera om det finns faktablad om vattenbruk
Ladda ner XML
Internet-källor
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoobank | Zoologiskt register
Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 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).
Trofisk nivå (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives