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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). Eponymy: Dr Luigi Balzan (1865–1893) was an Italian naturalist who set out on a grand tour of South America (1890), traveling alone by whatever means he could find, through Argentina, Brazil, Paraguay, Peru, and Bolivia. [...] (Ref. 128868), visit book page.
البيئة: الوسط / المنطقة المناخية / نطاق العمق / نطاق التوزيع البيئة
; المياه العذبة قاعية التغذية و المعيشة; غير مهاجرة. Tropical; 22°C - 28°C (Ref. 13614)
النضج: Lm? range ? - ? cm Max length : 16.0 cm TL ذكر/ مختلط الجنس; (Ref. 27139)
وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشعة الظهرية الناعمة (المجموع) : 9 - 11; أشعه شرجية لينه: 14 - 17. Having curved mouth cleft; small eyes (the orbital diameter is 7.7-10.0% SL in adult males; adult males have smaller eyes than adult females); large body depth of adults (23.2-26.2% SL); great head (29.2-30.6% SL in juveniles; no adults available) (Ref. 26656).
Bottom spawner, 5-7 months incubation. Is easy to maintain in the aquarium (Ref. 27139).
دورة الحياة وسلوك التزاوج النضج | التكاثر | وضع البيض | بيض | الخصوبة | اليرقات
Costa, W.J.E.M., 2003. Rivulidae (South American Annual Fishes). p. 526-548. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36579)
حالة القائمة الحمراء للاتحاد الدولي لحفظ الطبيعة والموارد الطبيعية (Ref. 130435: Version 2025-2 (Global))
