分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Ituglanis: Greek, itys, ityos = circle + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335); passensis: From its type locality, the Passa Três cave.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性; pH range: 7.6 - 8.4; 深度上下限 0 - 1 m (Ref. 46923). 熱帶; 19°C - 23°C (Ref. 46923)
South America: known only from Passa Três cave, Brazil.
南美洲: 已知只來自 Passa 三洞穴巴西了。
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 7.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 39970)
简单描述
检索表 | 型态特徵 | 形态测量图
臀鳍软条: 9; 脊椎骨: 36. Reduced dark pigmentation on the head and body where pigmentation varies from yellowish to light gray, with scattered melanophores limited to the dorsal region of the body. Degree of development of the eyes ranges from their appearing as black dots to being externally invisible. Maxillary barbel extending to the anterior margin of pectoral fin. First pectoral-fin ray, a short filament. Ribs 7. Head length 16-17% SL. Premaxilla rectangular with 3-4 rows; outer row conical (Ref. 46923).
在颜色改变的头部与身体上缩小的深色颜色了从淡黄色的到淡灰色的, 有分散的仅限于身体的背部区域的黑色素细胞。 眼范围从的发展的程度他们呈现黑色的点到外部看不见。 延伸至胸鳍的前缘的上颌骨触须。 第一个胸鳍鳍条, 一个短的丝状突起。 肋骨 7. 头长 16-17% SL。 前颌骨矩形的有三至四个列; 外部的列锥形.(参考文献 46923)
Occurs in small riffles with slow current 15-20 cm deep on average. Exhibits crypto-biotic habits, hiding in the gravel bottom or under limestone blocks. No observed agonistic behavior (Ref. 46923).
一般说来出现于小的急流且水流和缓的地方 15-20 公分深。 显示神秘的生物习惯,在砾石底部中或在石灰石块石下面藏。 没有被观察的好斗行为.(参考文献 46923)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 已知只來自 Passa 三洞穴巴西了。
Fernández, L. and M.E. Bichuette, 2002. A new cave dwelling species of Ituglanis from the São Domingos karst, central Brazil (Siluriformes: Trichomycteridae). Ichthyol. Explor. Freshwat. 13(3):273-278. (Ref. 46923)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
人类利用
渔业: 没有兴趣
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [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).
营养阶层 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).