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); epikarsticus: The specific name makes reference to the type of aquifer where the species occurs.
Environment: milieu / climate zone / depth range / distribution range
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
Maturity: 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).
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)
Life cycle and mating behavior
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 2024-1)
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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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): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
