Classification / Names
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Characiformes (Characins) >
Characidae (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
Écologie
; eau douce pélagique. Tropical; 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).
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 4.0 cm SL mâle / non sexé; (Ref. 88954); 4.4 cm (female)
Description synthétique
Morphologie | Morphométrie
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
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
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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).
Niveau trophique (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
