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Ptychocharax rhyacophila Weitzman, Fink, Machado-Allison & Royero L., 1994

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No image available for this species;
drawing shows typical species in Characidae.

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) > Characidae (Characins; tetras) 脂鯉科 (Characins; tetras) > Stevardiinae
Etymology: Ptychocharax: Greek, ptyx, -ychos = fold + Greek, charax = a marine fish without identification (Ref. 45335).
More on authors: Weitzman, Fink, Machado-Allison & RoyeroL..

Issue
Weitzman et al. (1994). See Weitzman & Menezes (1998) for relationships. See Burns et al. (1995) for evidence of insemination.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 大洋性. 熱帶

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

South America: Upper Siapa River in Casiquiare River drainage in Venezuela.
南美洲: Casiquiare 河流域的 Siapa 河上游。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 6.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 26734)

生物學特性     字彙 (例如 epibenthic)

Inhabits clear streams with sand and granitic rocks bottoms covered by dense mats of the plant Apinaga multibranchiata (Podostemaceae) in areas of fast water. Feeds on larvae of aquatic insects such as simuliids and trichopterans that were found among the podostemacean plants. A few ants and spiders were also found in the stomachs.

在快速水的區域中棲息於清澈溪流，底部為砂質與花崗岩的地方被植物 Apinaga multibranchiata(川苔草) 的密集墊蓋著的。 吃水生昆蟲幼生例如 simuliids 與被發現於 podostemacean 植物中的毛翅目昆蟲。 一些螞蟻與蜘蛛也被發現於腹部。

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

南美洲: Casiquiare 河流域的 Siapa 河上游。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Weitzman, S.H., S.V. Fink, A. Machado-Allison and R. Royero L., 1994. A new genus and species of Glandulocaudinae (Teleostei: Characidae) from southern Venezuela. Ichthyol. Explor. Freshwat. 5(1):45-64. (Ref. 26734)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 03 October 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [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).
營養階層 (Ref. 69278):  3.3   ±0.42 se; based on food items.
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).