分類 / Names
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); paraguassuensis: The name paraguassuensis refers to the type locality, rio Paraguaçu.
More on authors: Campos-Paiva & Costa.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: Brazil. Known only from the type locality, rio Paraguaçu near Iassu, Estado da Bahia, northeastern
Brazil (Ref. 58334)
南美洲: 巴西。 已知只來自模式標本產地 , 在 Iassu ， Estado da Bahia 附近的 rio Paraguacu了, 東北方的
巴西 (參考文獻 58334)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 4.3 cm SL 雄魚/尚未辨別雌雄; (Ref. 116503)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Distinguished from all other species of the genus by the following combination of characteristics:
color pale yellow on lateral and dorsal regions of head and body, whiter on ventral. Skin covered by
several irregular pale brown blotches aligned along the body (vs. distinct color patterns in all other Ituglanis); pectoral fin-rays i,6 (vs. i,4 in I. macuniama, I. cahyensis and I. parahybae; i,5 in I. amazonicus, I. eichorniarium,
I. metae and I. nebulosus; i,7 in I. bambui, I. passensis, I. epikarsticus; i,8 in I. ramiroi except in I. parkoi, I. proops and I. laticeps); pelvic-fin-rays i,4 (vs. i,3 in I. eichorniarium and I. cahyensis or pelvic-fin absent in I. parahybae; i,5 in I. amazonicus, I. passensis except in I. gracilior, I. nebulosus, I. macunaima, I. bambui, I. ramiroi, I. epikasticus, I. parkoi, and I. guayaberensis); parietal fontanel extending to posterior edge of medial parietal border (vs. parietal fontanel reduced or vestigial, restricted to middle of medial parietal border in all other Ituglanis except in some I. amazonicus and I. proops); the unusual reduced number of vertebrae 34–36, where vertebral counts normally range 39 or more (in I. amazonicus, I. cahyensis, I. eichorniarium, I. parahybae, I. proops, I. gracilior, I. herberti, I. metae, Ituglanis sp. A).
與所有的其他種的本屬區分了藉由跟隨特性的組合:
色彩白黃色的在側部與頭部與身體的背部區域上, 比較白的在腹面上。 皮膚蓋著
排列的一些不規則的白褐色斑塊沿著身體;(vs. 明顯的彩色斑紋在所有的其他 Ituglanis 中) 胸鰭鰭條 i,6(vs. i,4 在 I. macuniama ， I. cahyensis 與 I. parahybae 中; i,5 在 I. amazonicus ， I. eichorniarium 中,
I. metae 與 I. nebulosus; i,7 在 I. bambui ， I. passensis 中, I. epikarsticus; i,8 在 I. ramiroi 除了 I. parkoi ， I. proops 與 I. laticeps 中); 腹鰭-鰭條的 i,4(vs. i,3 在 I. eichorniarium 與 I. cahyensis 或腹鰭不存在於 I. parahybae; i,5 在 I. amazonicus, I. passensis 除了 I. gracilior ， I. nebulosus ， I. macunaima, I. bambui, I. ramiroi, I. epikasticus, I. parkoi, 與 I. guayaberensis); 延伸至中間頂骨邊緣的後緣的腔壁的囟門;(vs. 腔壁的囟門縮小的或退化的, 侷限於中央中間的頂骨邊緣在所有的其他 Ituglanis 除了一些 I. amazonicus 與 I. proops 中) 脊椎骨 34-36 的罕見少的數量, 在哪裡脊椎骨數通常排列 39個或更多.(在 I. amazonicus, I. cahyensis, I. eichorniarium, I. parahybae, I. proops, I. gracilior, I. herberti, I. metae, Ituglanis sp. 一)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 巴西。 已知只來自模式標本產地 , 在 Iassu ， Estado da Bahia 附近的 rio Paraguacu了, 東北方的
巴西 (參考文獻 58334)
Campos-Paiva, R.M. and W.J.E.M. Costa, 2007. Ituglanis paraguassuensis sp. n. (Teleostei: Siluriformes: Trichomycteridae): a new catfish from the rio Paraguaçu, northeastern Brazil. Zootaxa 1471:53-59. (Ref. 58334)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
近危 (NT) (B1b(iii)); Date assessed: 07 November 2018
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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).
營養階層 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
