分類 / 名前
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
>
Characiformes (Characins) >
Stevardiidae (Stevardiids) > Diapominae
Etymology: Knodus: Greek, knodon, -ontos = knife, sword (Ref. 45335); borari: Name 'borari' in honor of Boraris, the indigenous group inhabiting the lower Rio Tapajos. A noun of apposition.
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: Brazil.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 3.5 cm SL オス/雌雄の選別がない; (Ref. 137788)
簡単な記述
検索表 | 形態学 | 形態計測学
背鰭 (合計) : 8; 臀鰭: 17 - 19; 脊つい: 35. This species is distinguished from its congeners by the following set of characters: presence of only conical to tricuspid teeth in the inner pre maxillary row and dentary teeth; short maxilla, not exceeding the anterior margin of the orbit in a vertical plane; presence of a black blotch at the base of caudal fin and i,6,i pelvic-fin rays; 6 scales between dorsal-fin origin and lateral line; 13-14 circumpeduncular scales; and short snout(19.6%-22.5%LH) (Ref. 137788).
Body shape (shape guide): elongated; Cross section: compressed.
This species inhabits a moderately fast-flowing stream, 13 meters wide and 1-3 meters deep, with a substrate predominantly composed of rocks, gravel and sand (Ref. 137788).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Silva-Oliveira, C., A.L.C. Canto and F.R.V. Ribeiro, 2023. Knodus borari, a new species from the lower Rio Tapajos basin (Characiformes: Characidae). J Fish Biol. 103:136-142. (Ref. 137788)
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
XMLをダウンロードして下さい
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]. |
|
Bayesian length-weight
|
a=0.00776 (0.00346 - 0.01741), b=3.10 (2.91 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
栄養段階 (参照 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
漁業の脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |