Classificatie / Namen
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Otopharynx: Greek, ous = hear + Greek, pharyngx = pharynx (Ref. 45335); styrax: From the Greek masculine noun στύραξ (styrax), a metal spike at the lower end of a spear shaft, for the resemblance of this elongate cichlid with pointed head to the shape of that classical object; a noun in apposition (Ref. 119408).
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch. Tropical
Africa: Lake Malawi in Malawi and Tanzania (Ref. 119408).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 11.7 cm SL mannelijk / geslacht onbekend; (Ref. 119408)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 16 - 17; Dorsale zachte stralen (totaal) : 12 - 14; Anale stekels: 3; Anale zachte stralen: 9 - 10. Diagnosis: A medium-sized, laterally spotted haplochromine distinguishable from all previously described Otopharynx species by its more elongate body, its depth 24.3-28.6% of standard length; the next-most-elongate species are Otopharynx decorus, depth 29.4-33.3% of standard length, and O. lithobates, depth 29.5-34.4% of standard length; all others have a body depth larger than 31% (Ref. 119408). Otopharynx styrax is further separated from O. decorus by its longer caudal peduncle, length/depth 2.0-2.3 vs. 1.5-1.6 in O. decorus, and its narrower lower pharyngeal bone, the lateral edges of the horns diverging at about 70° vs. 79-87° in O. decorus; it is further distinguished from O. lithobates by the absence of dark spots on the dorsum below the dorsal-fin base vs. 4-6 distinct dorsal midline spots in O. lithobates, and longer caudal peduncle, length/depth 2.0-2.3 vs. 1.3-1.7 in O. lithobates (Ref. 119408).
Body shape (shape guide): fusiform / normal.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Oliver, M.K., 2018. Six new species of the Cichlid genus Otopharynx from Lake Malaŵi (Teleostei: Cichlidae). Bulletin of the Peabody Museum of Natural History 59(2):159-197. (Ref. 119408)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.4 ±0.4 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (16 of 100). 🛈 |