分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes) >
Apteronotidae (Ghost knifefishes) > Apteronotinae
Etymology: Sternarchorhynchus: Greek, sternon = sternon, + Greek, archos = anus + Greek, rhyngchos = snout (Ref. 45335); gnomus: From the Latin gnomus, meaning dwarf, in allusion to its small body size..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性; pH range: 6.6 - 7.6. 热带; 28°C - ? (Ref. 56955)
South America: Lower Río Caroni, Venezuela.
南美洲: 低的 Rio Caroni ，委内瑞拉。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 15.2 cm TL 雄鱼/尚未辨别雌雄; (Ref. 84053); 13.4 cm TL (female)
简单描述
型态特徵 | 形态测量图
臀鳍软条: 159 - 177. Distinguished from all congeners by the following combination of characters: snout strongly curved; head and mid-dorsum as dark as dorsolateral areas; anal and pectoral fins translucent, without conspicuous distal dark margins; scales present along anterodorsal region of body; 6-7 scales above lateral line at mid-body; 159-177 total anal-fin rays; five branchiostegal rays; greatest body depth 9.3-11.4% of length to end of anal fin; snout to anus 58.4-77.6% of length to end of anal fin; pre-pectoral fin length 34.8-41.0% of HL; snout length 57.6-65.4% of HL; head depth at nape 39.7-44.9% of HL; postocular distance 36.9-41.6% of HL; eye diameter 4.1-7.6% of HL; internarial distance 2.7-7.0% of HL; branchial opening 9.5-12.3% of HL; tail length 10.1-17.4% of length to end of anal fin; tail depth 8.3-13.8% of caudal length (Ref. 56955).
与所有的同类区分了藉由跟随组合特征: 吻强烈的弯曲; 头部与在-之中像背外侧的区域一样的深色背面; 臀鳍与胸鳍半透明的, 没有显著的末梢部的黑边; 鳞片存在的沿着身体的前背部区域; 6-7 鳞片在侧线上面在身体中央; 159-177个总臀鳍棘条; 五个鳃条骨; 最大的体高 9.3-11.4% 的长度臀鳍结束; 对肛门的吻 58.4-77.6% 的长度臀鳍结束; 前胸鳍长度 34.8-41.0% 的 HL; 吻的长度 57.6-65.4% 的 HL; 在后颈 39.7-44.9% 的 HL 的头部深度;眶後的距離 36.9-41.6% 的 HL; 眼直徑 4.1-7.6% 的 HL; internarial 距離 2.7-7.0% 的 HL; 鰓的打開 9.5-12.3% 的 HL; 尾部長度 10.1-17.4% 的長度臀鰭結束; 尾部深度 8.3-13.8% 的尾部長度.(參考文獻 56955)
Inhabits channel with clear water (Ref. 56955); visibility of approximately 2 m and the pH ranging from 6.6-7.6 (Ref. 84053). Feeds on insects such as chironomids, ephemeropterans and trichopterans (Ref. 56955).
栖息于峡道，水质清澈的地方.(参考文献 56955) 吃昆虫例如宝刀鱼， ephemeroptera 与 trichoptera 。 (参考文献 56955)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 低的 Rio Caroni ，委内瑞拉。
de Santana, C. D. and R.P. Vari, 2010. Electric fishes of the genus Sternarchorhynchus (Teleostei, Ostariophysi, Gymnotiformes); phylogenetic and revisionary studies. Zool. J. Linn. Soc. 159:223-371. (Ref. 84053)
世界自然保护联盟红皮书 (Ref. 130435)
极度濒危 (CR) (B1ab(iii)+2ab(iii)); Date assessed: 07 October 2020
人类利用
更多信息
俗名同种异名新陈代谢捕食者生态毒物学繁殖成熟度产卵场产卵群集孕卵数卵卵的发育
年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
参考文献养殖养殖信息品种遗传学Electrophoreses遗传率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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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=0.00355 (0.00145 - 0.00871), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.2 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
