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Teleostei >
Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); ramosus: From the branched nasal and maxillary barbels.
Environment: milieu / climate zone / 深度上下限 / distribution range
生态学
; 淡水 底中水层性. 熱帶
分布
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South America: Laguna Blanca basin in Argentina.
南美洲: 阿根廷。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 6.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 45128)
简单描述
检索表 | 型态特徵 | 形态测量图
脊椎骨: 38 - 39. Body dark brown, covered with minute papillae. Some or all barbels distally branched one or more times, retaining a constant width along its length. Oval premaxilla shorter than maxilla. Teeth arranged in 2 rows. Pectoral fin rounded. Dorsal fin with 3-4 procurrent and 6-7 principal rays. Anal fin with 3 procurrent and 8-9 principal rays. Caudal fin truncate with 9-12 dorsal procurrent, 13 principal and 10-11 ventral procurrent rays (Ref. 45128).
Body shape (shape guide): elongated; Cross section: circular.
身体深褐色的, 覆盖着细小的乳突。 一些或所有的触须末梢部地分枝了一个或多个倍,保有一个固定的宽度沿着它的长度。 椭圆形前颌骨短于颚骨。 齿排列成 2 列了。 胸鳍圆的。 背鳍有 3-4 前流的与 6-7 主要的鳍条。 臀鳍有 3 前流的与 8-9个主要的鳍条。 尾鳍截形有 9-12 背部的前流,13 主要的与 10-11 腹的前流鳍条.(参考文献 45128)
Collected from a pre-andean stream of clear water, with shallow, sandy bottom, and with vegetation along margins, at an elevation of about 3,680 m above sea level. Specimens were hiding in the sand. Stomach contents include mainly chironomid larvae (Diptera) and amphipod remains and sand (Ref. 45128),
采集自一个清澈的水域前安地斯山脉水流了, 水浅且底部为沙质的地方, 而且与植物沿着边缘, 在海拔在海平面上面的大约 3,680 公尺。 标本正在藏在砂中。 胃内含物主要地包括宝刀鱼仔鱼 (双翅类) 与片脚类动物残余物与沙子,(参考文献 45128)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 阿根廷。
Fernandez, L.A., 2000. A new species of Trichomycterus from northwestern Argentina (Ostariophysi: Trichomycteridae). Ichthyol. Explor. Freshwat. 11(4):349-354. (Ref. 45128)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-1)
极度濒危 (CR) (B2ab(iii)); Date assessed: 27 October 2020
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Estimates based on models
Phylogenetic diversity index (参考文献
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00358 - 0.02025), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.2 ±0.46 se; based on food items.
回复力 (参考文献
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Assuming Fec < 100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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