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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Petrotilapia: Latin,petra = stone + Bechuana, African native thiape = fish (Ref. 45335); xanthos: The name xanthos, from the Greek, meaning yellow referring to the yellow breeding color of males; a noun in apposition (Ref. 87181).
البيئة: الوسط / المنطقة المناخية / نطاق العمق / نطاق التوزيع
البيئة
; المياه العذبة محيطي. Tropical; 10°S - 11°S, 34°E - 35°E
Africa: Gallireya Reef in Lake Malawi, Malawi (Ref. 87181).
الحجم / وزن / العمر
النضج: Lm ?  range ? - ? cm
Max length : 13.0 cm SL ذكر/ مختلط الجنس; (Ref. 87181)
وصف مختصر
مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشواك الظهرية (المجموع) : 17 - 19; الأشعة الظهرية الناعمة (المجموع) : 6 - 10; شوكة شرجية: 3; أشعه شرجية لينه: 7 - 9. Diagnosis: The absence of a dark submarginal band in the dorsal fin distinguishes Petrotilapia xanthos from P. microgalana, P. genalutea, P. nigra, P. chrysos, P. mumboensis, and P. pyroscelos which have such a band (Ref. 87181). Adult males of P. xanthos are yellow, which distinguishes them from P. tridentiger, which are light blue with dark blue bars; they are also distinct from those of P. flaviventris, and P. palingnathos; males of P. flaviventris are yellow on ventral and mid flank with scales outlined in blue; the dorsal one-third is blue to gray with yellow and orange highlights; cheeks and throat yellow to orange; adult male, and female, P. palingnathos have distinctly retrognathous jaws and can thus be distinguished from those of P. xanthos (Ref. 87181). Females of P. xanthos are light brown, which distinguishes them from those of P. tridentiger, which are brown, from P. chrysos and P. microgalana, which are golden yellow, from those of P. flaviventris, which are yellow brown with interrupted black stripes and fading to dark brown dorsally; the melanin pattern in females of P. xanthos have both horizontal and vertical elements, which distinguishes them from those of P. chrysos, which lack a distinct melanin pattern and are completely yellow, and from P. microgalana and P. flaviventris, which have no vertical elements in their melanin pattern (Ref. 87181).
Body shape (shape guide): short and / or deep.
دورة الحياة وسلوك التزاوج
النضج | التكاثر | وضع البيض | بيض | الخصوبة | اليرقات
Lundeba, M., J.R. Stauffer Jr. and A. F. Konings, 2011. Five new species of the genus Petrotilapia (Teleostei: Cichlidae), from Lake Malawi, Africa. Ichthyol. Explor. Freshwat. 22(2):149-168. (Ref. 87181)
حالة القائمة الحمراء للاتحاد الدولي لحفظ الطبيعة والموارد الطبيعية (Ref. 130435: Version 2025-2 (Global))
استخدامات بشرية
أدوات
تقارير خاصة
تنزيل XML
مصادر علي الأنترنت
تقديرات تستند إلى النماذج
مؤشر التنوع الشُعبي الوراثي (مرجع 82804) |
PD50 = 0.5005 [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). |
مستوى غذائي (مرجع 69278) |
3.4 ±0.4 se; based on size and trophs of closest relatives |
المرونه (مرجع 120179) |
عالي, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أقل من 15 شهر (Preliminary K or Fecundity.). |
ضعف الصيد (Ref. 59153) |
Low vulnerability (19 of 100). 🛈 |