分类 / Names
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Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Hyphessobrycon: Greek, hyphesson, -on, -on = a little smaller + Greek, bryko = to bite (Ref. 45335); eilyos: From the Greek eilyos, den, lurking-place, in allusion to the habitat (backwaters chocked with vegetal matter) occupied by the new species (and according to local information, shared with anacondas, Eunectes murinus). Noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性. 热带
South America: Brazil.
南美洲: 巴西。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 2.5 cm 雄鱼/尚未辨别雌雄; (Ref. 52338)
简单描述
检索表 | 型态特徵 | 形态测量图
脊椎骨: 32 - 34. Diagnosis: Hyphessobrycon eilyos is distinguished from its congeners by the absence of humeral and caudal spots; by the presence of numerous dark chromatophores on the lateral surface of the body, with the chromatophores intensely concentrated on the ventral region from the pelvic-fin origin to the end of the caudal-fin base; dorsal, adipose, and caudal fins with carmine red pigmentation in life; the presence of 7-11 maxillary teeth; 6 or 7 horizontal scale rows between the dorsal fin origin and the lateral line; and 15 to 19 branched anal-fin rays. Detailed comparisons between H. eilyos and congeners sharing a general dark color pattern are presented in the "Discussion" (Ref. 52338).
鉴别: Hyphessobrycon eilyos 被与它的同类藉由缺少肱骨而尾部的斑点区分; 藉由有在身体的侧面表面上的很多深色的色素胞,与色素胞密集专注于尾鳍基底的腹区域从腹鳍起点到末端; 背部的, 用洋红色红色的颜色活着时的脂肪 , 与尾鳍; 那有 7-11 上颚齿; 在背鳍起源与侧线之间的 6 或 7 水平的鳞片列; 而且 15 到 19个分枝的臀鳍棘条。 在 H. eilyos 与分享一个一般的深色彩色斑纹的同类之间的详细比较在 " 讨论 " 出现。 (参考文献 52338)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 巴西。
Lima, F.C.T. and C.R. Moreira, 2003. Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil. Neotrop. Ichthyol. 1(1):21-33. (Ref. 52338)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
临近濒危 (NT) (B1b(iii)); Date assessed: 07 November 2018
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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=0.00955 (0.00428 - 0.02132), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.9 ±0.3 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
