分類 / 名稱
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: 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.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 底中水層性. 熱帶; ? - 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 水壩的單一組。
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 3.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 55401)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 11; 臀鰭軟條: 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.
與它的區分了地面上的與洞穴同類藉由下列特徵的組合: 體型小 (最大的 3.4 公分 SL); 在身體顏色與眼睛大小中的減少的較高的程度,2.0-2.1% HL; 非常退化或不存在的上枕骨囟門; 用相似的寬度,背部的突起短的基底與尾舌骨的 laminar 表面的末梢部末端; 顎骨的在後部突起長達上顎的長度, 中間的凹窪略圓的; 用不連續的中間-在後部的突出顎骨; fronto-淚骨 2/3 顎骨的長度, 前面地與在後部尖; 用 20-21個齒鰓蓋有 9個齒與中鰓蓋; 肋骨的 5 對;(也在一個 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).
出現於在一組 rimstone 水壩 (牆壁-鈣的形狀障礙, aragonite 或者關在欄中的其他化學沈積層水水池) 中的水池,10-30 公分深而且有岩石的底部.(參考文獻 55401) 一種獨居性種, 在底部上游泳, 沿著牆壁與有時在水表面水池.(參考文獻 55401)
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在巴西的 Sao Mateus 洞穴的 rimstone 水壩的單一組。
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
極危 (CR) (B2ab(iii)); Date assessed: 18 May 2022
人類使用
漁業: 沒有興趣
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基於模型的估計
系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00759 (0.00332 - 0.01733), b=3.00 (2.81 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
營養階層 (參考文獻 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
釣魚的脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |