分类 / 名称
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); epikarsticus: The specific name makes reference to the type of aquifer where the species occurs.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 底中水层性. 热带; ? - 25°C (Ref. 55401)
South America: single set of rimstone dams in São Mateus Cave in Brazil.
南美洲: 在巴西的 Sao Mateus 洞穴的 rimstone 水坝的单一组。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 3.4 cm SL 雄鱼/尚未辨别雌雄; (Ref. 55401)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 11; 臀鳍软条: 8; 脊椎骨: 36. Distinguished from its epigean and cave congeners by the combination of the following characters: small size (max. 3.4 cm SL); the higher degree of reduction in body pigmentation and in eye size, 2.0-2.1% HL; supraoccipital fontanel very reduced or absent; base and distal extremity of laminar surface of urohyal with similar widths, dorsal process short; posterior process of palatine as long as palatine length, medial concavity slightly rounded; maxilla with discrete medial-posterior projection; fronto-lachrymal 2/3 length of maxilla, anteriorly and posteriorly pointed; opercle with 9 odontodes and interopercle with 20-21 odontodes; 5 pairs of ribs (also observed in a juvenile of I. bambui); caudal skeleton with upper hypural plate triangular and lower one rectangular, neural spine or preural centrum with acute extremity, dorsal procurrent rays 14 and ventral 10 (Ref. 55401).
Body shape (shape guide): elongated.
与它的区分了地面上的与洞穴同类藉由下列特征的组合: 体型小 (最大的 3.4 公分 SL); 在身体颜色与眼睛大小中的减少的较高的程度, 2.0-2.1% HL; 非常退化或不存在的上枕骨囟门; 用相似的宽度，背部的突起短的基底与尾舌骨的 laminar 表面的末梢部末端; 颚骨的在后部突起长达上颚的长度, 中间的凹洼略圆的; 用不连续的中间-在后部的突出颚骨; fronto-泪骨 2/3 颚骨的长度, 前面地与在后部尖; 用 20-21个齿鳃盖有 9个齿与中鳃盖; 肋骨的 5 对;(也在一个 I. bambui 的稚魚觀察) 具有上面的尾下碟尾部的骨骼三角形而低的矩形, 用尖銳的末端，背部的前流鰭條 14 與腹面 10 的髓棘或 preural 椎體.(參考文獻 55401)
描述: 背鰭有 11 鰭條;(3 不分枝的, 8個分枝) 臀鰭有 8個鰭條;(2 不分枝的, 6個分枝) 胸鰭有 8個鰭條, 第一個鰭條比較長的﹐不分枝的與絲狀的; 腹鰭有 5個鰭條, 第一個鰭條不分枝的.(參考文獻 55401)
Occurs in pools in a set of rimstone dams (wall-shaped barriers of calcite, aragonite or other chemical deposits that impound water pools), 10-30 cm deep and with rocky bottom (Ref. 55401). A solitary species, swimming on the bottom, along the walls and sometimes at the surface of the pools (Ref. 55401).
在一组 rimstone 水坝 (墙壁-钙的形状障碍, aragonite 或者关在栏中的其他化学沈积层水水池) 中出现于水池, 10-30 公分深与且底部为岩石的地方.(参考文献 55401) 一种独居性种, 在底部上游泳, 沿着墙壁与有时在水表面水池.(参考文献 55401)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 在巴西的 Sao Mateus 洞穴的 rimstone 水坝的单一组。
Bichuette, M.E. and E. Trajano, 2004. Three new subterranean species of Ituglanis from central Brazil (Siluriformes: Trichomycteridae). Ichthyol. Explor. Freshwat. 15(3):243-256. (Ref. 55401)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
极度濒危 (CR) (B2ab(iii)); Date assessed: 18 May 2022
人类利用
渔业: 没有兴趣
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特别资料
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网络资源
基于模型的估算
系统发育多样性指数 (参考文献
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00337 - 0.01709), b=3.00 (2.81 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
渔业脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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