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); caudofasciatus: Derived from the Latin cauda (tail) and fasciatus (with bars), referring to the caudal-fin color pattern.
More on authors: Alencar & Costa.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 热带
South America: southeastern Brazil.
南美洲: 巴西东南方。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 5.3 cm SL 雄鱼/尚未辨别雌雄; (Ref. 53352)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 10 - 11; 臀鳍软条: 9; 脊椎骨: 35 - 37. Distinguishable from all other species of the genus by the combination of the following characters: 7-8 pectoral-fin rays, long filamentous first pectoral-fin ray (about 50-70% pectoral-fin length), 10-20 opercular odontodes, 30-52 interopercular odontodes, opercular patch of odontodes wide, and 6-7 branchiostegal rays. Can be easily distinguished from T. alternatus, T. longibarbatus and T. pantherinus by possessing a single median last supraorbital pore (vs. paired pore). Distinguished from all other species of the genus from the Brazilian Shield River basins by having a unique color pattern of four gray bars on the caudal fin (Ref. 53352).
可与所有的其他种的本属区别藉由下列特征的组合: 7-8 胸鳍鳍条，长的丝状第一个胸鳍鳍条 (大约 50-70% 胸鳍长度), 10-20个鳃盖齿， 30-52个间鳃盖骨齿, 齿的鳃盖小区块宽的, 与 6-7 鳃条骨。 可能是与容易地区分的 T. alternatus, T. longibarbatus 与 T. pantherinus 藉由持有中动脉持续眶上的孔.(vs. 成对的孔) 在尾鳍上藉由有一个与所有的其他种的本属从区分了巴西盾甲河流域四个灰色条纹的獨特彩色斑紋。 (參考文獻 53352)
Inhabits both turbid and clear water with shallow water (40-100 cm deep). Sometimes found swimming in daylight, but mostly collected under marginal vegetation or under vegetal debris on the bottom (Ref. 53352).
栖息于混浊的与具有浅水区 (40-100 公分深) 的清澈水域. 有时发现在白昼中游泳, 但是大部份在底部上在杂草丛或植物的残枝下面收集了.(参考文献 53352)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 巴西东南方。
Alencar, A.R. and W.J.E.M. Costa, 2004. Description of two new species of the catfish genus Trichomycterus from southeastern Brazil (Siluriformes: Trichomycteridae). Zootaxa 744:1-8. (Ref. 53352)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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=0.00977 (0.00400 - 0.02388), b=3.04 (2.84 - 3.24), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±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).
