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
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); belensis: Named for its type locality, Departamento Belén.
More on authors: Fernández & Vari.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: Laguna Blanca basin in Argentina.
南美洲: 阿根廷。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 6.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 43677)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 11 - 13; 臀鰭軟條: 9 - 10; 脊椎骨: 36 - 39. Oval premaxilla smaller than the maxilla. Pelvic fins with associated pelvic girdle. Branched dorsal fin rays 7-8. Ribs 15-17. Caudal peduncle compressed. The region anteroventral to the dorsal fin origin unpigmented. Head and body lack the very thick, rugose layer of fatty tissue. Lacks extensive perforation on the skin's surface by ampullary organs (Ref. 43677).
比顎骨小的橢圓形前頜骨。 腹鰭有聯合了腰帶。 分枝的背鰭鰭條 7-8. 肋骨 15-17. 尾柄扁長形的。 區域前腹的對背鰭起源沒有顏色。 頭部與身體缺乏脂肪組織的非常厚又多皺紋層。 在壺腹器官的皮膚的表面上缺乏廣泛的穿孔。 (參考文獻 43677)
Collected from a small, clear water stream, at approximately 3,500 m elevation and 0.5 m deep, running over a sandy bottom and with marginal vegetation limited to grasses. Stomach contents include dipteran larvae (Chironomidae and Simuliidae), coleopterans (Elmidae), trichopterans, and plecopterans (Perlidae) (Ref. 43677).
在大約 3,500 公尺海拔與 0.5 公尺深，採集自一個小且清澈的水水流了, 跑在一個沙質底部與，有雜草叢的地方被僅限於的草之上。 胃內含物包括雙翅類昆蟲的幼生 (搖蚊與 Simuliidae) ，鞘翅目 (長角泥蟲科) ，毛翅目昆蟲與 plecopterans(Perlidae) 。 (參考文獻 43677)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 阿根廷。
Fernández, L. and R.P. Vari, 2002. New species of Trichomycterus from the Andes of Argentina with a redescription of Trichomycterus alterus (Siluriformes: Trichomycteridae). Copeia 2002(3):739-747. (Ref. 43677)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
極危 (CR) (B2ab(iii)); Date assessed: 25 October 2020
人類使用
漁業: 沒有興趣
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00400 - 0.02388), b=3.04 (2.84 - 3.24), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.2 ±0.40 se; based on food items.
回復力 (參考文獻
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Assuming Fec < 100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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