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) >
Acestrorhynchidae (Smallscale pike characins)
狼牙脂鯉科 (Smallscale pike characins) > Heterocharacinae
Etymology: Heterocharax: Greek, heteros = other + Greek, charax = a marine fish without identification (Ref. 45335); leptogrammus: From the thin stripe above the anal-fin base; noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: Negro River and upper portion of Orinoco River basin.
南美洲: 尼格羅河與奧里諾科河河流域的部分上游。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 3.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 36811)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 9; 臀鰭軟條: 28 - 34; 脊椎骨: 34. A thin band of dark pigmentation present from dorsal to the anal fin base (lacking in H. macrolepis). Differs from H. virgulatus where this band and the longitudinal band extending from the posterior portion of the head to the caudal fin base is thicker and more heavily pigmented. Further, this species differs from H. virgulatus with its relatively smaller orbital diameter; more pointed posteroventral corner of preopercle; relatively elongate gill rakers along the epibranchial and hypobranchial portion of the first branchial arch; single ossification in the position primitively occupied by infraorbitals 4 and 5; small posterior dentary teeth beginning behind lateralmost tooth of the anterior row thus not forming a second internal teeth series (Ref. 38319).
一條深色顏色的細紋從背鰭到臀鰭基底呈現。 (沒有 H. macrolepis) 有別於這一條條紋與從頭部到尾鰭基底的後面的部分延伸的縱向條紋比較厚的 H. virgulatus 與顏色更深的。 進一步，這種有別於 H. virgulatus 用它的相當小的眼窩直徑; 前鰓蓋骨的更尖腹面後方角落; 相當細長的鰓耙沿著上鰓骨與第一個鰓弓的鰓蓋上方部分; 在位置的單一成骨原始地被眶下骨 4 與 5 佔領了; 如此開始前面列的後面最後面牙齒的小在後部的齒骨齒不形成第二個內在的齒系列。 (參考文獻 38319)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: 尼格羅河與奧里諾科河河流域的部分上游。
Toledo-Piza, M., 2000. Two new Heterocharax species (Teleostei: Ostariophysi: Characidae), with a redescription of H. macrolepis. Ichthyol. Explor. Freshwat. 11(4):289-304. (Ref. 38319)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
