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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Hyphessobryconinae
Etymology: Hyphessobrycon: Greek, hyphesson, -on, -on = a little smaller + Greek, bryko = to bite (Ref. 45335); sebastiani: Named for the younger brother of Carlos García-Alzate, Sebastian.
Eponymy: Sebastian García-Alzate is the senior author’s younger brother. (Ref. 128868), visit book page.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の漂泳性. Tropical
South America: middle section of the San Juan River drainage, Pacific versant of Colombia.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 4.6 cm SL オス/雌雄の選別がない; (Ref. 83523)
簡単な記述
検索表 | 形態学 | 形態計測学
背鰭 (合計) : 11; 脊つい: 33. The presence of two humeral spots and the absence of caudal blotch separate this species from all congeners, except Hyphessobrycon bifasciatus, Hyphessobrycon balbus, Hyphessobrycon colombianus, Hyphessobrycon flammeus, Hyphessobrycon griemi, Hyphessobrycon itaparicensis, Hyphessobrycon savagei, Hyphessobrycon togoi and Hyphessobrycon weitzmanorum. Differs from those species in having the following characters: a higher number of branched pectoral-fin rays (12-13 vs. 10-11); a higher number of branched anal-fin rays (25-28 vs.17-24); a higher number of lateral scales (35-37 vs. 30-32); a higher number of scales between the lateral line and the base of the dorsal fin (eight vs. five to seven); a higher number of unbranched anal–fin rays (five vs. three to four unbranched); presence of three pairs of large bony hooks on anal fin of the mature males (vs. one or two pairs); a higher number of pored lateral-line scales (13-18 vs. 8-13, except Hyphessobrycon balbus with 11-22 and Hyphessobrycon togoi with 8-14) (Ref. 83523).
Body shape (shape guide): short and / or deep.
Based on 3 specimens, this species feeds mainly on insects (Ref. 83523).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
García-Alzate, C.A., C. Román-Valencia and D.C. Taphorn, 2010. A new species of Hyphessobrycon (Teleostei: Characiformes: Characidae) from the San Juan River drainage, Pacific versant of Colombia. Zootaxa 2349:55-64. (Ref. 83523)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
栄養段階 (参照
69278): 2.9 ±0.3 se; based on size and trophs of closest relatives
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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