分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); keronolepis: Derived from the Greek keronos (meaning beehive), plus lepís (meaning scales), in reference to the resemblance of the reticulation pattern of scales with a beehive..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
South America: Ubatuba in São Paulo State to Guapimirim River basin in Rio de Janeiro State, Brazil.
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 10.4 cm SL 雄鱼/尚未辨别雌雄; (Ref. 119398)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 11; 臀鳍软条: 21; 脊椎骨: 38. Astyanax keronolepis is distinguished from all other species of Astyanax by the following combination of characters: 9-11 dentary teeth, gradually decreasing in size; high concentration of chromatophores distributed along the scale contour forming a hexagonal pattern, resembling a honeycomb; head heavily covered with tubercles in adults males; midlateral strip expanded anteriorly and tapering posteriorly toward the caudal peduncle; and caudal spot elliptically shaped. In addition, this species differs from most congeners, except from A. taeniatus, A. ribeirae, A. hastatus, A. burgerai, A. giton and A. bahiensis, by its humeral spot shaped like a comma. It can be diagnosed from A. taeniatus by having teeth asymmetrical and with no gap on the dentary symphysis (vs. teeth symmetrical and with a gap on dentary symphysis). It can be differentiated from A. ribeirae, A. hastatus, A. burgerai, A. giton and A. bahiensis by having only one humeral spot (vs. two humeral spots) (Ref. 119398).
Inhabits streams usually characterized by crystalline and rapid waters with rocks covered by sludge and algae. Feeds predominantly on vegetable matter and occasionally hymenoptera based on gut contents of 20 specimens (Ref. 119398).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
Silva, P.C., M.C. Malabarba and L.R. Malabarba, 2019. Integrative taxonomy: Morphology and ancient DNA barcoding reveals the true identity of Astyanax taeniatus, a tetra collected by Charles Darwin during the Beagle’s Voyage. Zoologischer Anzeiger, 278:110-120. (Ref. 119398)
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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=0.01148 (0.00526 - 0.02507), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.8 ±0.4 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).
