分類 / 名前
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Cynolebias: Greek, kyon = dog + Greek, odous = teeth + Greek, lebias = a kind of small fish (Ref. 45335); obscurus: From the Latin adjective obscurus, meaning dark, in reference to the predominant dark grey coloration in males of this species.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の漂泳性. Tropical
South America: Paramirim River drainage, São Francisco River basin in Brazil.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 4.9 cm SL オス/雌雄の選別がない; (Ref. 97357); 3.9 cm SL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
背鰭 (合計) : 16 - 18; 臀鰭: 19 - 22; 脊つい: 34 - 35. Cynolebias obscurus differs from all other species of the C. porosus group by the possession of the following characters: distal portion of anal-fin rays grey in males (vs. red); white dots concentrated on middle of flank in males (vs. about equally arranged in the whole flank); basihyal width about 50-55% of length (vs. about 65-70%); ventral process of autopalatine absent (vs. present) (Ref. 97357).
Body shape (shape guide): fusiform / normal.
Occurs in vestigial small pools, measuring about 3 m wide and extending close and parallel to the road for about 1 km. The whole area around the pool is composed of plantation, without any vestige of the original habitat. Sympatric with Hypsolebias macaubensis (Ref. 97357).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Costa, W.J.E.M., 2014. Six new species of seasonal killifishes of the genus Cynolebias from the São Francisco river basin, Brazilian Caatinga, with notes on C. porosus (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 25(1):79-96. (Ref. 97357)
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): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
栄養段階 (参照
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回復力 (参照
120179): 高い, 15か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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