Moenkhausia aurora

New species: Moenkhausia aurora

Moenkhausia aurora, a new species of tetra from the rio Culuene, rio Xingu basin, in Mato Grosso State is described. A very pretty reddish tetra, unsure if this species has been imported before. If you know, please comment with any trade names. Update, thank you to Fishbook for information, this species has been imported into the hobby prior โ€“ as ๐‘€๐‘œ๐‘’๐‘›๐‘˜โ„Ž๐‘Ž๐‘ข๐‘ ๐‘–๐‘Ž ๐‘๐‘“. ๐‘™๐‘œ๐‘๐‘’๐‘ ๐‘– โ€œXinguโ€.

Open-access โ€“ https://www.scielo.br/j/ni/a/MnqLMjz4RNsqJfD4YMBvx3s/

๐—ฅ๐—ฒ๐˜€๐—ฒ๐—ฎ๐—ฟ๐—ฐ๐—ต ๐—ง๐—ถ๐˜๐—น๐—ฒ

New reddish species of ๐‘€๐‘œ๐‘’๐‘›๐‘˜โ„Ž๐‘Ž๐‘ข๐‘ ๐‘–๐‘Ž Eigenmann (Characiformes: Characidae) from the upper rio Xingu basin, Brazil

๐—–๐—ถ๐˜๐—ฎ๐˜๐—ถ๐—ผ๐—ป

Reia, L., Silva, G. de S. C. e ., Oliveira, C., & Benine, R. C.. (2024). New reddish species of ๐‘€๐‘œ๐‘’๐‘›๐‘˜โ„Ž๐‘Ž๐‘ข๐‘ ๐‘–๐‘Ž Eigenmann (Characiformes: Characidae) from the upper rio Xingu basin, Brazil. Neotropical Ichthyology, 22(1), e230089. https://doi.org/10.1590/1982-0224-2023-0089

๐—”๐—ฏ๐˜€๐˜๐—ฟ๐—ฎ๐—ฐ๐˜

A new species of ๐‘€๐‘œ๐‘’๐‘›๐‘˜โ„Ž๐‘Ž๐‘ข๐‘ ๐‘–๐‘Ž from the rio Culuene, rio Xingu basin, in Mato Grosso State is described here through genetic and morphological data. 

This new species differs from all congeners by the following combination of characters: the presence of reddish color on the posterior portion of the body, as well as on the base of anal, adipose, and pelvic fins in live specimens; a conspicuous midlateral dark stripe, which extends from posterior margin of opercle to the middle of caudal-fin rays, becoming wider and more conspicuous from the vertical through the dorsal-fin origin; absence of humeral blotch; absence of blotches on caudal-fin lobes; by having the concentration of dark pigments on the anterior margin of the caudal-fin rays; and presence of 2โ€“3 maxillary teeth. 

A brief discussion about its putative relationships with other congeners is presented.

๐—˜๐˜๐˜†๐—บ๐—ผ๐—น๐—ผ๐—ด๐˜†

The specific epithet ๐‘Ž๐‘ข๐‘Ÿ๐‘œ๐‘Ÿ๐‘Ž comes from Latin, which means dawn or sunrise. In allusion to the red, orange, and gold colors present in specimens in life. A noun in apposition.

๐—ฃ๐—ต๐—ผ๐˜๐—ผ ๐—–๐—ฟ๐—ฒ๐—ฑ๐—ถ๐˜

Color in life of ๐‘€๐‘œ๐‘’๐‘›๐‘˜โ„Ž๐‘Ž๐‘ข๐‘ ๐‘–๐‘Ž ๐‘Ž๐‘ข๐‘Ÿ๐‘œ๐‘Ÿ๐‘Ž (A), paratype, LBP 30660, Brazil, Mato Grosso State, municipality of Primavera do Leste, rio Culuene. Specimen not measured. Photo by Eric V. Ywamoto; and ๐‘€๐‘œ๐‘’๐‘›๐‘˜โ„Ž๐‘Ž๐‘ข๐‘ ๐‘–๐‘Ž ๐‘™๐‘œ๐‘๐‘’๐‘ ๐‘– (B) from Mato Grosso State, municipality of Sonora, rio Piquiri drainage, rio Paraguay basin. Specimen not measured. Photo by Heriberto G. Junior.

Copyright ยฉ 2024 the Author(s). Published in Neotropical Ichthyology journal. This paper is released under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence. https://creativecommons.org/licenses/by/4.0/

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