分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); puriventris: Derived from the Latin purus (pure) and ventris (venter), in reference to the absence of dark pigmentation below lateral midline of body.
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.
South America: Tributaries of the upper rio Santíssimo, rio Grande drainage, rio Paraíba do Sul basin, Serra do Barracão in Brazil.
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 8.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 91059)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 11 - 13; 臀鳍软条: 9 - 11; 脊椎骨: 36 - 38. Similar to Trichomycterus alternatus, T. caudofasciatus, T. longibarbatus, and T. pantherinus, and can be diagnosed from other species of the Trichomycterus by the long filamentous first pectoral-fin ray about 50-70 % of the pectoral-fin length (vs. 0-40 %). Can be distinguised from T. pantherinus by the presence of the anteriormost section of the infraorbital canal (vs. absence) and 8 pectoral-fin rays (vs. 7); from T. alternatus by having 13-14 pleural ribs (vs. 10-12), and by the pelvic-fin insertion placed in a vertical through the centrum of the 17th or 18th vertebra (vs. 14-15th); from T. caudofasciatus by having pelvic-fin insertion, dorsal-fin and anal-fin origin in the vertical through 17th- 18th (vs. 14th-15th), 19th- 21st (vs. 17 th), 23nd- 24 th (vs. 21st- 22nd) respectively; from T. longibarbatus by having shorter nasal barbel, reaching middle of pectoral-fin base (vs. posterior portion of pectoral-fin base), more slender and narrower body (body depth 11.7-13.5 % SL, vs. 14.9-18.2 %, body width 6.4 -8.3 % SL, vs. 8.6- 12.9 %), shorter head (head length 16.8-19.5 % SL (vs. 20.4 - 21.8%). Differs from all congeners from southeastern Brazilian river basins, by having a unique color pattern, consisting of dark pigmentation concentrated along and above midline of flank, but absent below midline (vs. dark pigmentation extending to ventral portion of flank) (Ref. 91059).
Body shape (shape guide): elongated.
Occurs in fast running water stream, with about 2 m width and 1 m depth, sandy bottom and pale brown and turbid water. Also found in clear water stream with rocky bottom. Encountered under marginal vegetation and no specimen was seen swimming at daylight, suggesting a nocturnal or crepuscular behavior (Ref. 91059).
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Barbosa, M.A. and W.J.E.M. Costa, 2012. Trichomycterus puriventris (Teleostei: Siluriformes: Trichomycteridae), a new species of catfish from the rio Paraíba do Sul basin, southeastern Brazil. Verteb. Zool. 62(2):155-160. (Ref. 91059)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
工具
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 |
渔业脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |