Priocharax varii

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Priocharax varii Mattox, Souza, Toledo-Piza, Britz & Oliveira, 2020

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drawing shows typical species in Characidae.

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Teleostei > Characiformes (Characins) > Characidae (Characins; tetras) > Characinae
Etymology: Priocharax: Greek, prio = to saw + Greek, charax, -akos = a fish without identification (Ref. 45335);  varii: Named for the late Richard P. Vari, one of the most infuential researchers in Neotropical ichthyology of the past 40 years; noun in genitive..

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 底中水层性.

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South America: Brazil.

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 1.4 cm SL 雄鱼/尚未辨别雌雄; (Ref. 128819)

简单描述 型态特徵 | 形态测量图

背的软条 (总数): 9; 臀鳍软条: 18 - 25; 脊椎骨: 33. This species is distinguished from its congeners by the presence of an adipose fin (vs. absence); differs further from P. ariel and P. pygmaeus by the pelvic-fin rays i,6 with i,5 rare (vs. i,5); postcleithra 2 present (vs absent); differs further from P. ariel by having a shorter caudal peduncle 14-18 % SL (vs. 18- 24 % SL) (Ref. 128819).

生物学特性     字汇 (例如 epibenthic)

Specimens were collected between 14:00 and 17:00 in a small tributary of the Rio Jamari, close to a bush of submerged macrophytes in a slow flowing part of the Rio Preto, approximately 200 m above rapids. It was collected with Apistogramma resticulosa, Axelrodia lindeae, Axelrodia stigmatias, Hemigrammus bellottii, Hyphessobrycon aff. sweglesi, Leporinus sp., Nannostomus trifasciatus, Odontocharacidium aphanes and Satanoperca sp. Three of these species are considered miniature: the characids Axelrodia lindeae, A. stigmatias and the crenuchid Odontocharacidium aphanes. This species and the three miniatures are mostly transparent, and with the larger Hemigrammus bellottii which has a predominantly translucent body in life, an ‘almost invisible league’ for the Rio Negro was proposed by Carvalho et al., 2006 (Ref. 128847 in Ref. 128819).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Mattox, G.M.T., C.S. Souza, M. Toledo-Piza, R. Britz and C. Oliveira, 2020. A new miniature species of Priocharax (Teleostei: Characiformes: Characidae) from the Rio Madeira drainage, Brazil, with comments on the adipose fin in characiforms. Vertebrate Zoology 70(3):417-433. (Ref. 128819)

世界自然保护联盟红皮书 (Ref. 130435)

  不评价 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

 





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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
营养阶层 (Ref. 69278):  2.9   ±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).