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Megaleporinus elongatus (Valenciennes, 1850)

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Megaleporinus elongatus
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Brazil country information

Common names: Piau verdadeiro, Piapara, Piau
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known only from the Rio Jequitinhonha and Rio Pardo, rivers of the eastern region of Brazil in the states of Minas Gerais and Bahia. Record from São Francisco River seems to be erroneous (Ref. 93038). Also Ref. 36801.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Britski, H.A., J.L.O. Birindelli and J.C. Garavello, 2012
National Database:

Common names from other countries

Boga, Soukkaseisojatetra, Aflang kæmpemudderlaks, ... more

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Anostomidae (Headstanders)
Etymology: Megaleporinus: Name from Greek 'mega' meaning large or largest, plus Leporinus, the genus which most species (now in this genus) were previously assigned; refrring to the large size of most congeners..
  More on author: Valenciennes.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 底生の漂泳性; potamodromous (Ref. 51243).   Subtropical

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

South America: Known only from the Rio Jequitinhonha and Rio Pardo in Brazil. Record from São Francisco River, the type locality in the original description, seems to be erroneous (Ref. 93038). Reported from Paraná and La Plata basins (Ref. 36801).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 20.8  range ? - ? cm
Max length : 50.0 cm TL オス/雌雄の選別がない; (Ref. 115169)

簡単な記述 検索表 | 形態学 | 形態計測学

背鰭 (合計) : 11 - 12; 臀鰭: 10 - 11; 脊つい: 34. Distinguished from all species of Leporinus , exceptL. amblyrhynchus , by having the combination of three teeth on each premaxilla and dentary (tooth formula 3/3) and 12 scale rows around the caudal peduncle (vs. tooth formulae 4/4, 3/4 or 4/3, and 14 or 16 scale rows around the caudal peduncle). Can be diagnosed from Leporinus amblyrhynchus by having three dark blotches on the lateral line (vs. dark longitudinal stripe along the lateral line). Additional characters useful to diagnose Leporinus elongatus include 36 or 37 pored scales on the lateral line, 4 scales rows from the dorsal fin origin to the lateral line and 4 from the lateral line to the base of the pelvic fin (Ref. 93038).

生物学     用語集 (例 epibenthic)

Distinct pairs breed on densely grown weedy places (Ref. 205).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

Distinct pairs breed on densely grown weedy places (Ref. 205).

主な参考文献 Upload your references | 参考文献 | コーディネーター : Garavello, Júlio | 協力者

Ramirez, J.L., J.L.O. Birindelli and P.M. Galetti Jr., 2017. A new genus of Anostomidae (Ostariophysi: Characiformes): Diversity, phylogeny and biogeography based on cytogenetic, molecular and morphological data. Molecular Phylogenetics and Evolution, 107: 308-323. (Ref. 113781)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 07 November 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5010   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00776 - 0.01289), b=3.09 (3.04 - 3.14), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
栄養段階 (Ref. 69278):  2.5   ±0.1 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  手段, １．４年～４．４年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (40 of 100).