分类 / Names
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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.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 热带
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
Maturity: 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).
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)
Life cycle and mating behavior
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 2024-1)
人类利用
渔业: 没有兴趣
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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 (0.00358 - 0.02025), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Assuming Fec < 100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
