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Characiformes (Characins) >
Characidae (Characins; tetras) > Stevardiinae
Etymology: Knodus: Greek, knodon, -ontos = knife, sword (Ref. 45335); dorsomaculatus: Name from the words 'dorso' for dorsal and 'maculare' for spot, referring to the dark blotch on the dorsal fin rays..
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Tropical
South America: Teles Pires River, Tapajós River basin, Brazil.
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 4.8 cm SL オス/雌雄の選別がない; (Ref. 85071)
簡単な記述
形態学 | 形態計測学
背鰭 (合計): 9. This species is distinguished from all its congeners by the having a dark blotch on the base of the first five branched dorsal fin rays, ii,9 dorsal fin rays. It differs from K. pasco in having 2 teeth on the maxillary (vs. 5-6), 5 scale rows between the lateral line and dorsal fin origin (vs. 7) and by the 2-2.5 scale-wide dark longitudinal band from gill cover to the tips of middle caudal fin rays. It is further distinguished from all other Knodus species in its absence of a distinct dorsal fin blotch (except Knodus chapadae, Knodus meridae, Knodus mizquae, Knodus moenkhausii, Knodus savannensis, Knodus tiquiensis and Knodus victoriae, and by the distance from the snout tip to dorsal fin origin 46.8-49.2% (vs. 49.1-60.0% in all other species). The new
species is distinguished from K. meridae, K. mizquae, K. savannensis, K. tiquiensis and K. victoriae by the dorsal fin base length (13·9–14·8% v., 7·7–13·5%). It differs further from K. chapadae and K. moenkhausii in having 7 cusps on the maxillary teeth (vs. 5) (Ref. 85071).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Ferreira, K.M. and A.L. Netto-Ferreira, 2010. Knodus dorsomaculatus (Characiformes: Characidae), a new species from Teles Pires River, Tapajós River basin, Brazil. J. Fish Biol. 77(3):468-478. (Ref. 85071)
IUCNのレッドリストの状況は (Ref. 130435)
絶滅危惧 (EN) (B1ab(i,iii,iv)); Date assessed: 18 May 2022
Human uses
より多くの情報
共通名の類義語代謝捕食動物生態毒性繁殖成熟放精卵の集合体生産力卵卵の開発
Age/Size成長体長-重さLength-length体長組成形態計測学形態学幼生幼生の動力補充豊度BRUVS
参考文献水産養殖水産養殖の紹介緊張遺伝子のElectrophoreses遺伝病気行列NutrientsMass conversion
協力者画像Stamps, Coins Misc.音シガテラ(食中毒の名前)速度泳ぐ 型式カマOtoliths脳視覚
用具
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インターネットの情報源
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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).