分類 / Names
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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 / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性; pH range: 5.5 - 7.0; dH range: 4 - 10. Tropical; 22°C - 26°C (Ref. 1672)
South America: Mazaruni River system, Guyana.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 4.0 cm TL オス/雌雄の選別がない; (Ref. 41850); common length : 2.8 cm SL オス/雌雄の選別がない; (Ref. 37401)
Feeds on worms, crustaceans and insects (Ref. 7020).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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のレッドリストの状況は (Ref. 130435: Version 2024-1)
Human uses
水産業: 興味がない; 水族館・水槽: 商業
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
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).
栄養段階 (Ref.
69278): 3.3 ±0.40 se; based on food items.
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (tm=0.5-58, Fec=50-70).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
