分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Characidae (Characins; tetras)
脂鯉科 (Characins; tetras) > Stevardiinae
Etymology: Chrysobrycon: Greek, chrysos = golden + Greek, ebryko = to bite; eliasi: The species is named as patronym in honor and memory to the late Elias Vanegas G., father of the senior author (J.V-R.) (Ref. 88954).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性. ; 12°S - 13°S, 69°W - 70°W
South America: Peru. Known from different localities of the río Madre de Dios basin and the upper río Manuripe basin, both flowing into the río Madeira basin, Peru (Ref. 88954).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 4.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 88954); 4.4 cm (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Chrysobrycon eliasi is distinguished from its congeners by the maxillary teeth, tricuspidates, bicuspidates, and conical, vs. all maxillary teeth tricuspidate to pentacuspidate in C. myersi and C. hesperus. Chrysobrycon eliasi also has the terminal lateral-line tube developed between caudal-fin rays 10-11 vs. absence of the terminal lateral-line tube in C. myersi and C. hesperus. Furthermore, Chrysobrycon eliasi differs from C. hesperus by the presence of 6-15 (mode = 11; n = 28) maxillary teeth occupying more than 70% of the length of the maxilla in adults, vs. maxilla with 2-9 teeth (mode = 3; n = 11) occupying less than 70% of its length in adults, and a lower number of predorsal scales 18-22 (mode = 19; n = 28) vs. 22-23 (mode = 22; n = 11), respectively. Chrysobrycon eliasi is also readily differentiated from C. myersi by a smaller dorsal-fin to hypural complex length 36.32-41.17% SL vs. 42.19-47.38% SL; smaller gill-gland length in males, 3.57-5.05% SL vs. 6.52-6.66% SL; shorter maxillary length, 33.76-38.75% HL vs. 39.85-48.28% HL; and a lower number of branched anal-fin rays, 24-30 vs. 33-36. Chrysobrycon eliasi has a different pattern of scales near to the pouch scale of males; the additional small scale is set under the pouch scale and its ventral border is not seen in the lateral view (Ref. 88954).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Vanegas-Ríos, J.A., M.d.l.M. Azpelicueta and H. Ortega, 2011. Chrysobrycon eliasi, new species of stevardiine fish (Characiformes: Characidae) from the río Madre de Dios and upper río Manuripe basins, Peru. Neotrop. Ichthyol. 9(4):731-740. (Ref. 88954)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
