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分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei > Characiformes (Characins) 脂鯉目 (Characins) > Anostomidae (Headstanders) 小口脂鯉科 (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.
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). 南美洲: Parana ， La Plata 與 Sao 弗朗西斯科河流域。
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm20.8 range ? - ? cm Max length : 50.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 115169)
背的軟條 (總數) : 11 - 12; 臀鰭軟條: 10 - 11; 脊椎骨: 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). Body shape (shape guide): elongated; Cross section: compressed.
Distinct pairs breed on densely grown weedy places (Ref. 205).
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)
