分類 / 名前
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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); pauciradiatus: Derived from the Latin pauci (few) and radiatus (with rays), in reference to the reduced number of pelvic-fin rays.
More on authors: Alencar & Costa.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の. Tropical
South America: Debaixo da Serra, upper Paraná River basin in Brazil.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 5.2 cm SL オス/雌雄の選別がない; (Ref. 57604)
簡単な記述
検索表 | 形態学 | 形態計測学
背鰭 (合計) : 10 - 12; 臀鰭: 9; 脊つい: 36 - 38. Differs from all other members of the genus by possessing four pelvic-fin rays. Similar to Trichomycterus reinhardti by having a unique color pattern consisting of a broad dark brown stripe on the flank, dorsally bordered by a bright yellow zone without dark marks; but differs from Trichomycterus reinhardti by having a more slender body (body depth 12.6-15.1% SL) and a shorter preorbital length (25.7-39.3% HL) (Ref. 57604).
Body shape (shape guide): elongated.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Alencar, A.R. and W.J.E.M. Costa, 2006. Trichomycterus pauciradiatus, a new catfish species from the upper rio Paraná basin, southeastern Brazil (Siluriformes: Trichomycteridae). Zootaxa 1269:43-49. (Ref. 57604)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照 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). |
栄養段階 (参照 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
回復力 (参照 120179) |
低い, 4.5年~14年の倍増期間の最小個体群 (Assuming Fec < 100). |
漁業の脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |