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); potschi: Named for the herpetologist Sérgio Potsch, who first collected the new species.
Eponymy: Dr Sergio Potsch de Carvalho e Silva is a Brazilian herpetologist in the Department of Zoology, Institute of Biology and Laboratory Head, Federal University of Rio de Janeiro. [...] (Ref. 128868), visit book page.
More on authors: Barbosa & Costa.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 居於水底的. 熱帶
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: coastal basins between Mangaratiba and Itaguaí in Rio de Janeiro, southeastern Brazil.
南美洲: 在里約熱內盧，巴西東南方的在 Mangaratiba 與 Itaguai 之間的海岸流域。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 8.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 52913)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 11 - 12; 臀鰭軟條: 9 - 10; 脊椎骨: 37 - 39. Posterior tip of posterior ceratohyal slender, its depth 2.3-6.5% of longitudinal length of the hyoid bar; ventroposterior process of posterior ceratohyal absent or vestigial (1.7%, or less when present, of longitudinal length of the hyoid bar); opercular patch of odontodes slender, its depth 44.0-73.7% of base length of opercular dorsal projection; first pectoral-fin ray 28.8-37.0% of pectoral-fin length); 7 pectoral fin rays; 8 branchiostegal rays; 14-15 pleural ribs; infraorbital sensory pores i1 and i3 present; supraorbital sensory pores s6 nearer to each other than to eye; dorsal-fin origin in vertical through centrum of 20th or 21st vertebra; anal-fin origin in vertical through centrum of 23rd or 24th vertebra; pelvic fins anteriorly placed; prepelvic length 53.9-57.8% SL; orbital diameter 6.7-7.5% of head length; head length 20.0-21.8% SL; interorbital width 28.1-30.8% of head length; caudal peduncle depth 13.8-15.3% SL; body width 9.7-12.3% SL; body depth 15.1-16.4% SL; dorsal-fin base 10.6-11.4% SL; anal-fin base 8.6-10.2% SL; and pectoral-fin length 9.9-12.5% SL (Ref. 52913).
Body shape (shape guide): elongated.
在後部角舌骨的後部頂端細長的, 它的深度 U 字形橫帶的 2.3-6.5% 縱向長度; 在後部角舌骨的下後突起不存在或退化的;(1.7% ，以內當存在時, U 字形橫帶的縱向長度) 齒的鰓蓋小區塊細長的, 它的深度鰓蓋背部的突出 44.0-73.7% 基底長度; 第一個胸鰭鰭條 28.8-37.0% 的胸鰭長度); 7個胸鰭鰭條; 8個鰓條骨; 14-15根胸膜的肋骨; 眶下的感覺小孔 i 1 與 i 3 呈現; 眶上的感覺小孔 s 6 超過到眼睛較接近彼此; 背鰭起點在垂直的經過第 20 或第 21個脊椎骨的椎體; 臀鰭起源在垂直的經過第 23 或第 24個脊椎骨的椎體; 腹鰭前面地放置; 腹鰭前的長度 53.9-57.8% SL; 眼窩的直徑 6.7-7.5% 的頭長; 頭長 20.0-21.8% SL; 眼間骨寬度 28.1-30.8% 的頭長; 尾柄深度 13.8-15.3% SL; 身體寬度 9.7-12.3% SL; 體高 15.1-16.4% SL; 背鰭基底 10.6-11.4% SL; 臀鰭基底 8.6-10.2% SL; 而且胸鰭長度 9.9-12.5% SL.(參考文獻 52913)
Inhabits clear water, shallow stream (about 0.6 m deep), with sandy bottom (Ref. 52913). Some specimens were encountered entirely buried in the bottom (Ref. 52913).
棲息於清澈的水域，淺灘水流 (大約 0.6 公尺深), 且底部為沙地的地方.(參考文獻 52913) 一些標本完全地被見到埋藏在底部之中。 (參考文獻 52913)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在里約熱內盧，巴西東南方的在 Mangaratiba 與 Itaguai 之間的海岸流域。
Barbosa, M.A. and W.J.E.M. Costa, 2003. Trichomycterus potschi (Siluriformes: Loricarioidei): a new trichomycterid catfish from coastal streams of southeastern Brazil. Ichthyol. Explor. Freshwat. 14(3):281-287. (Ref. 52913)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
人類使用
漁業: 沒有興趣
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00358 - 0.02025), 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 (參考文獻
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回復力 (參考文獻
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).
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