分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes)
毛鼻鯰科 (Pencil or parasitic catfishes) > Trichomycterinae
Eponymy: Dr Silvina Adela Menu-Marque is an Argentinean zoologist at the Department of Biological Sciences, University of Buenos Aires, where her doctorate was awarded (2002). [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 溫帶
South America: Mendoza River basin in Argentina.
南美洲: Mendoza 河流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 7.3 cm 雄魚/尚未辨別雌雄; (Ref. 33071)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 11 - 14; 臀鰭軟條: 10 - 12; 脊椎骨: 39 - 43. Entire surface of body skin perforated by pores of ampullary organs; cephalic sensory canal system represented only by anterior portion of supraorbital canal enclosed by nasal bone, and posterior portion of postotic canal enclosed by pterotic and posttemporosupracleithrum; two anteriormost pores of supraorbital canal present medial to anterior and posterior nostrils, respectively; one or two pores of postotic canal on pterotic and between pterotic and posttemporosupracleithrum; body lateral line represented only by portion posterior to head, with one or two pores; head and body pit lines absent in most individuals; peritoneum and wall of pleuroperitoneal cavity blackish due to presence of many melanophores; eye small and supported by membranous outgrowth of hyomandibula and by membrane; and ceratobranchial and epibranchial bones without ossified gill rakers. The short dorsal fin has 5 precurrent rays plus 6 to 9 principal rays; anal fin has 4 precurrent rays and 6 to 8 principal rays.
身體皮膚的整個表面壺腹器官穿孔的經由小孔; 頭部的知覺管系統只出現被鼻骨隔絕的眶上管的前部了，而且耳後管的在後部部分被 pterotic 與 posttemporosupracleithrum 隔絕了; 二個最前面眶上管的孔呈現中間的對前面與後面的鼻孔, 分別地; 在 pterotic 上的耳後管的一或二個孔與在 pterotic 與 posttemporosupracleithrum 之間; 只出現部分的身體側線在頭部後面, 有一或二個孔; 頭部與身體凹洞線不存在於大多數的個體; 腹膜與腹腔的牆壁黑色的由於有許多黑色素細胞; 眼小的而且由上顎的膜狀自然的發展支撐了與藉著薄膜; 而且沒有鈣化的鰓耙的角鰓骨與上鰓骨。 短的背鰭加上 6 到 9個主要的鰭條有 5個 precurrent 鰭條; 臀鰭有 4個 precurrent 鰭條與 6 到 8個主要的鰭條。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: Mendoza 河流域。
Arratia, G., 1998. Silvinichthys, a new genus of trichomycterid catfishes from the Argentinian Andes, with redescription of Trichomycterus nigricans. Ichthyol. Explor. Freshwat. 9(4):347-370. (Ref. 33071)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 15 January 2021
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00279 - 0.01564), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
