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: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); trefauti: Named after Dr. Miguel Trefaut Rodrigues, who discovered and collected the first specimens of the species..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: known only from the type-locality : Riacho Andrequicé, Trinta Réis, Minas Gerais, Brazil.
南美洲: 已知只來自模式標本產地了 : Riacho Andrequice, Trinta 再是, Minas Gerais 巴西。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
簡短描述
型態特徵 | 形態測量圖
背棘 (總數): 2; 背的軟條 (總數): 7; 臀棘 1; 臀鰭軟條: 6. Trichomycterus trefauti differs from all other known members of the sub-family Trichomycterinae by the autapomorphic presence of ann elliptical, vertically elongated, brown spot, at caudal-fin base (vs. without elliptical spot at caudal-fin base), and the combination of homogeneously gray color pattern (vs. yellowfish, presence of stripes or or bands, or lack of color pattern), first pectoral-fin ray prolonged as a filament (vs. not prolonged), subterminal mouth (vs. inferior or terminal mouth), two supraorbital pores at interorbital space (vs. one supraorbital pore at mesial line), caudal fin truncate with attenuated edges (vs. caudal fin rounded), pelvic fins covering anus and urogenital openings (vs.not covering), interorbital space very wide 39.8-45.9% HL(vs. more or less than 39.8-45.9% HL), maxillary barbels very long 84.2-93.0% HL (vs.more or less than 84.2-93.0% HL), rictal barbels very long 67.6-74.3% HL (vs.more or less than 67.6-74.3%HL).
Trichomycterus trefauti 有別於子該科 Trichomycterinae 的所有其他已知成員藉由 autapomorphic 有 ann 橢圓形,垂直地延長, 褐色斑點, 在尾鰭基底 (vs. 沒有橢圓的斑點 在尾鰭基底), 與同種灰色彩色斑紋 (vs. yellowfish, 有斑紋或者或者條紋, 或沒有彩色斑紋) 的組合第一個延長的胸鰭鰭條作為一個絲狀突起 (vs. 不被延長的 ) ，接近端位的嘴 (vs. 下方的或者端位口), 二個眶上的孔在眼間隔 (vs. 一個眶上的孔在中央的線) ，尾鰭截形有變細邊緣 (vs. 尾鰭圓的) ，腹鰭覆蓋肛門與泌尿生殖孔 (vs. 不覆蓋), 眼間隔非常寬的 39.8-45.9% HL(vs. 約略超過 39.8-45.9% HL), 上頜骨觸鬚非常長的 84.2-93.0% HL(vs. 約略超過 84.2-93.0% HL), rictal 觸鬚非常長的 67.6-74.3% HL.(vs. 約略超過 67.6-74.3%HL)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 已知只來自模式標本產地了 : Riacho Andrequice, Trinta 再是, Minas Gerais 巴西。
Wosiacki, W.B., 2004. New species of the catfish genus Trichomycterus (Siluriformes, Trichomycteridae) from the headwaters of the rio São Francisco bason, Brazil. Zootaxa 592:1-12. (Ref. 52782)
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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=0.00851 (0.00355 - 0.02043), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Assuming Fec < 100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
