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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
Etymology: Trigonectes:Greek, trygon = a sting ray + Greek, nekton = swimmer (Ref. 45335); rubromarginatus:From the Latin ruber (red) and marginatus (with margin), referring to the red stripe along the ventral margin of the caudal fin (Ref. 26656). More on author: Costa.
البيئة: الوسط / المنطقة المناخية / نطاق العمق / نطاق التوزيع البيئة
; المياه العذبة قاعية التغذية و المعيشة; غير مهاجرة. Tropical; 23°C - 27°C (Ref. 13614)
النضج: Lm? range ? - ? cm Max length : 12.0 cm TL ذكر/ مختلط الجنس; (Ref. 27139)
وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشعة الظهرية الناعمة (المجموع) : 10 - 14; أشعه شرجية لينه: 16 - 18. Distinguished from other species of the genus, except T. strigabundus, by having straight mouth cleft. Differs from T. strigabundus and all other species of the genus by the elongated pelvic fin of the males, whose tip is reaching to the base of 11th to 15th anal rays and the presence of a bright red stripe along the ventral margin of the male caudal fin. Seems to differ from T. strigabundus by having a larger size (Ref. 26656).
Costa, W.J.E.M., 1990. Systematics and distribution of the neotropical annual fish genus Trigonectes (Cyprinodontiformes, Rivulidae), with description of two new species. Ichthyol. Explor. Freshwat. 1(2):135-150. (Ref. 26656)
حالة القائمة الحمراء للاتحاد الدولي لحفظ الطبيعة والموارد الطبيعية (Ref. 130435: Version 2025-2 (Global))
