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Characiformes (Characins) >
Lebiasinidae (Pencilfishes) > Pyrrhulininae
Etymology: Nannostomus: Latin, nannus = small + Greek, stoma = mouth (Ref. 45335).
Eponymy: Heinrich Espe was a dealer in ornamental fish. [...] (Ref. 128868), visit book page.
Issue
The most recent distributional records were published by Weitzman & Weitzman (1982: Fig. 229). Most recent systematic description by Weitzman (1966). Locality records including the locality of the original collections are discussed by Weitzman & Cobb (1975). Lectotype designated by Weitzman (1966). Occasionally exported as an aquarium fish, Weitzman et al. (2001) and Bork & Mayland (1998).
Environment: milieu / climate zone / نطاق العمق / distribution range
البيئة
; المياه العذبة قاعية التغذية و المعيشة; pH range: 5.5 - 7.0; dH range: 4 - 10. Tropical; 22°C - 26°C (Ref. 1672)
South America: Mazaruni River system, Guyana.
الحجم / وزن / العمر
النضج: Lm ? range ? - ? cm
Max length : 4.0 cm TL ذكر/ مختلط الجنس; (Ref. 41850); common length : 2.8 cm SL ذكر/ مختلط الجنس; (Ref. 37401)
Feeds on worms, crustaceans and insects (Ref. 7020).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
During courtship males swim above females, and nudge them on the head. Males attach 20-40 eggs to the underside of leaves, using their bag-like anal fin.
Weitzman, M. and S.H. Weitzman, 2003. Lebiasinidae (Pencil fishes). p. 241-251. 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. 37104)
IUCN Red List Status (Ref. 130435: Version 2025-1)
استخدامات بشرية
مصائد: غير ذات اهمية; حوض مائي: تجاري
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Phylogenetic diversity index (مرجع
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00631 (0.00270 - 0.01474), b=3.08 (2.88 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
مستوى غذائي (مرجع
69278): 3.3 ±0.40 se; based on food items.
المرونه (مرجع
120179): عالي, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أقل من 15 شهر (tm=0.5-58, Fec=50-70).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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