分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Heptapteridae (Three-barbeled catfishes)
七鰭鯰科 (Three-barbeled catfishes)
Etymology: Pimelodella: Diminutive latinized of greek, pimele = fat + Greek, odous, odella = little teeth (Ref. 45335); spelaea: Name from latin 'speleum', for cave or cavern, referring to its habitat; an adjective..
More on authors: Trajano, Reis & Bichuette.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的.
South America: Brazil.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 8.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 55501)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
This species is distinguished in having smaller eyes (eyeball diameter 19-21.3% HL) and possessing fainter coloration with reduced lateral dark band as compared to its congeners; pectoral fin with 10 branched rays; weakly developed serrae in the posterior margin of the dorsal-fin spine (vs. well developed in P. laurentii); and, lacking the dorsal dark stripe along dorsal and anterior adipose fins (vs. presence in P. avanhandavae (Ref. 55501).
這種被差別在於有較小的眼 (眼球直徑 19-21.3% HL) 而且用被縮小的側面深色條紋持有較模糊的顏色相較於它的同類; 胸鰭有 10個分支條; 在背鰭棘的後面的邊緣中的弱發展的鋸齒;(vs. 發展良好的在 P. laurentii 中) 並且, 缺乏背部深色的斑紋沿著背部而前面的脂肪鰭 (vs. 出現在 P. avanhandavae 中.(參考文獻 55501)
Collected mainly in soft-bottomed pools with very slow current, averaging 1.5 m deep, 5 m above the mainstream level. Individuals were observed calmly swimming near the bottom, in the midwater and near the surface. Elusive fishes and apparently photophobic (Ref. 55501).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Reproductive mode and guild assumed to be the same as congeners (Ref. 56810).
Trajano, E., R.E. Reis and M.E. Bichuette, 2004. Pimelodella spelaea: a new cave catfish from central Brazil, with data on ecology and evolutionary considerations (Siluriformes: Heptapteridae). Copeia 2004(2):315-325. (Ref. 55501)
IUCN 瀕危狀態 (Ref. 130435)
極危 (CR) (B2ab(iii)); Date assessed: 07 November 2018
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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=0.00832 (0.00383 - 0.01808), b=2.97 (2.80 - 3.14), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
