分类 / 名称
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Teleostei >
Siluriformes (Catfishes) >
Trichomycteridae (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.
环境:氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 居于水底的. 热带
分布
领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
South America: coastal basins between Mangaratiba and Itaguaí in Rio de Janeiro, southeastern Brazil.
南美洲: 在里约热内卢,巴西东南方的在 Mangaratiba 与 Itaguai 之间的海岸流域。
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 8.1 cm SL 雄鱼/尚未辨别雌雄; (Ref. 52913)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 11 - 12; 臀鳍软条: 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.
在后部角舌骨的后部顶端细长的, 它的深度 U 字形横带的 2.3-6.5% 纵向长度; 在后部角舌骨的下后突起不存在或退化的;(1.7% ,以内当存在时, U 字形横带的纵向长度) 齿的鳃盖小区块细长的, 它的深度鳃盖背部的突出 44.0-73.7% 基底长度; 第一个胸鳍鳍条 28.8-37.0% 的胸鳍长度); 7个胸鳍鳍条; 8个鳃条骨; 14-15根胸膜的肋骨; 眶下的感觉小孔 i 1 与 i 3 呈现; 眶上的感觉小孔 s 6 超过到眼睛较接近彼此; 背鳍起点在垂直的经过第 20 或第 21个脊椎骨的椎體; 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).
栖息于清澈的水域,浅滩水流 (大约 0.6 公尺深), 且底部为沙地的地方.(参考文献 52913) 一些标本完全地被见到埋藏在底部之中。 (参考文献 52913)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 在里约热内卢,巴西东南方的在 Mangaratiba 与 Itaguai 之间的海岸流域。
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
渔业: 没有兴趣
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特别资料
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网络资源
基于模型的估算
系统发育多样性指数 (参考文献 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=0.00912 (0.00394 - 0.02111), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
营养阶层 (参考文献 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
回复力 (参考文献 120179) |
低的, 最小族群倍增时间4.5 - 14 年 (Assuming Fec < 100). |
渔业脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |