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Melanorivulus is a genus of South American freshwater fish in the family Rivulidae. Most species are endemic to the Río de la Plata, eastern Amazon (west to Tapajós basin), Tocantins–Araguaia and São Francisco basins in Brazil, but a few members of this genus range west into Bolivia, south into Paraguay and Argentina, and east to Parnaíba and Sergipe in northeastern Brazil. Only M. schuncki occurs north of the Amazon River.[2][3][4][5] They inhabit shallow waters, generally 5–30 cm (2–12 in) deep, at the margins of streams in open or fairly open habitats like the Cerrado or Cerrado–Amazon transition.[5] Many have tiny ranges and are seriously threatened.[6]
Similar to closely related genera such as Anablepsoides, Atlantirivulus, Cynodonichthys and Laimosemion, Melanorivulus are jumpers and non-annual killifish.[7][8][9]
Melanorivulus are small fish, with the largest species up 5 cm (2.0 in) in total length and the smallest less than 2 cm (0.8 in).[3][10] They are often quite colorful and some are kept in aquariums.[3][5]
Until 2011, Melanorivulus were included in Rivulus,[7] and some prefer to maintain them in that genus.[8]
If recognized as a valid genus, there are currently 60 species in Melanorivulus:[11]
Melanorivulus is a genus of South American freshwater fish in the family Rivulidae. Most species are endemic to the Río de la Plata, eastern Amazon (west to Tapajós basin), Tocantins–Araguaia and São Francisco basins in Brazil, but a few members of this genus range west into Bolivia, south into Paraguay and Argentina, and east to Parnaíba and Sergipe in northeastern Brazil. Only M. schuncki occurs north of the Amazon River. They inhabit shallow waters, generally 5–30 cm (2–12 in) deep, at the margins of streams in open or fairly open habitats like the Cerrado or Cerrado–Amazon transition. Many have tiny ranges and are seriously threatened.
Similar to closely related genera such as Anablepsoides, Atlantirivulus, Cynodonichthys and Laimosemion, Melanorivulus are jumpers and non-annual killifish.
Melanorivulus are small fish, with the largest species up 5 cm (2.0 in) in total length and the smallest less than 2 cm (0.8 in). They are often quite colorful and some are kept in aquariums.
Melanorivulus es un género de peces de agua dulce de la familia rivúlidos en el orden de los ciprinodontiformes,[1] que se distribuyen por ríos de América del Sur.[2][3]
Antiguamente incluido como subgénero dentro del género Rivulus, fue elevado a la categoría de género en 2011.[4]
Viven en ríos y arroyos de la sabana boscosa y en estanques y pantanos de la selva de gran parte de Sudamérica.[3][4]
Se conocen unas 40 especies válidas en este género:[5][4]
Melanorivulus es un género de peces de agua dulce de la familia rivúlidos en el orden de los ciprinodontiformes, que se distribuyen por ríos de América del Sur.
Antiguamente incluido como subgénero dentro del género Rivulus, fue elevado a la categoría de género en 2011.
Melanorivulus is een geslacht van straalvinnige vissen uit de familie van de killivisjes (Rivulidae).
Melanorivulus is een geslacht van straalvinnige vissen uit de familie van de killivisjes (Rivulidae).
Melanorivulus là một chi cá trong họ Rivulidae.
Hiện hành ghi nhận các loài cá sau trong chi này:
Bài viết Lớp Cá vây tia này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Melanorivulus là một chi cá trong họ Rivulidae.
