分類 / 名前
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Characiformes (Characins) >
Characidae (Characins; tetras) > Cheirodontinae
Etymology: Serrapinnus: Latin, serran, serranus, saw and a fish of genus Serranus + Latin, pinna = spiny, thorn (Ref. 45335); malabarbai: Named after Luiz Roberto Malabarba (UFRGS); genitive noun.
Eponymy: Dr Luiz Roberto Malabarba is a Brazilian ichthyologist and biologist. [...] (Ref. 128868), visit book page.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 外洋の; 深さの範囲 0 - 1 m (Ref. 119420). Tropical
South America: Brazil.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 2.5 cm SL オス/雌雄の選別がない; (Ref. 119420)
簡単な記述
検索表 | 形態学 | 形態計測学
背鰭 (合計) : 8; 臀鰭: 13 - 16. This species is distinguished by the following characters: with a well-defined dark midlateral stripe on body starting over the eye; D 8 branched rays; 3 premaxillary teeth; an inconspicuous caudal-peduncle spot (Ref. 119420).
Body shape (shape guide): elongated; Cross section: compressed.
Inhabits a small, clear water stream 1.5-4 m wide and 0.3-1.5 m deep, with swift water current, and sandy bottom. It was captured in a shallow (0.2-0.6 m), and narrow (0.5-1.5 m) temporary channel and syntopically with Hyphessobrycon cf. vilmae, Hyphessobrycon loweae, Characidium mirim and unidentified species of Characidium sp., and Hemigrammus sp. (Ref. 119420).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Jerep, F.C., F.C.P. Dagosta and W.M. Ohara, 2018. A new miniature species of Serrapinnus (Characiformes: Characidae) from the upper Rio Araguaia, Brazil. Copeia 106(1):180-187. (Ref. 119420)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
水産業: 興味がない
用具
特記事項
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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=0.01072 (0.00450 - 0.02549), b=3.07 (2.89 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
栄養段階 (参照 69278) |
2.8 ±0.5 se; based on size and trophs of closest relatives |
漁業の脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |