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); passensis: From its type locality, the Passa Três cave..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性; 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 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 7.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 39970)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
臀鰭軟條: 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).
在顏色改變的頭部與身體上縮小的深色顏色了從淡黃色的到淡灰色的, 有分散的僅限於身體的背部區域的黑色素細胞。 眼範圍從的發展的程度他們呈現黑色的點到外部看不見。 延伸至胸鰭的前緣的上頜骨觸鬚。 第一個胸鰭鰭條, 一個短的絲狀突起。 肋骨 7. 頭長 16-17% SL。 前頜骨矩形的有三至四個列; 外部的列錐形.(參考文獻 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).
一般說來出現於小的急流且水流和緩的地方 15-20 公分深。 顯示神秘的生物習慣,在礫石底部中或在石灰石塊石下面藏。 沒有被觀察的好鬥行為.(參考文獻 46923)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
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)
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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 (0.00282 - 0.01550), 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): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
