๐๐๐๐๐๐๐โ๐๐โ๐๐ ๐ก๐๐๐๐๐๐ก๐๐๐๐๐, a new species of rheophilic loricariid catfish is described from the Manhuaรงu River, Doce River Basin, Eastern Brazil. This new species compared to congeners from the Doce River basin has traits that represent important adaptations for living in torrential habitats.
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๐ฅ๐ฒ๐๐ฒ๐ฎ๐ฟ๐ฐ๐ต ๐ง๐ถ๐๐น๐ฒ
A New Small-Sized ๐๐๐๐๐๐๐โ๐๐โ๐๐ (Siluriformes: Loricariidae) from the Manhuaรงu River, Doce River Basin, Minas Gerais State, Eastern Brazil
๐๐ถ๐๐ฎ๐๐ถ๐ผ๐ป
Edson H. L. Pereira, Tiago C. Pessali, Roberto E. Reis. A New Small-Sized ๐๐๐๐๐๐๐โ๐๐โ๐๐ (Siluriformes: Loricariidae) from the Manhuaรงu River, Doce River Basin, Minas Gerais State, Eastern Brazil, Ichthyology & Herpetology, 112(1), 69-75, (13 March 2024). DOI: https://doi.org/10.1643/i2023058
๐๐ฏ๐๐๐ฟ๐ฎ๐ฐ๐
We report the first record of a species of ๐๐๐๐๐๐๐โ๐๐โ๐๐ in the Manhuaรงu River basin, an affluent to the right bank of the middle Doce River drainage in eastern Brazil.
The description is based on a series of specimens recently collected and also on historical samples. All specimens were obtained from habitats with very strong water current running over flat bedrock. The new species is readily diagnosed from congeners by features related to the distinct morphology of lower lip papillae, unique pattern of plates covering the pectoral girdle between insertions of pectoral fins, and the lack of a maxillary barbel. In addition, the combination of longer snout, smaller orbital diameter, shape of the pectoral-fin spine, low number of dentary teeth, and lack of a dorsal-fin spinelet also distinguishes the new species from all species of ๐๐๐๐๐๐๐โ๐๐โ๐๐ .
The new species is further compared to ๐๐๐๐๐๐๐โ๐๐โ๐๐ ๐๐๐ ๐ข๐ก๐, ๐. ๐ ๐๐ข๐ก๐ข๐๐, ๐. ๐๐๐๐ ๐๐ฆ๐๐๐ก๐, and ๐. ๐ฃ๐๐ก๐ข๐๐, congeners from the Doce River basin, and hypothesized to have traits that represent important adaptations for living in torrential habitats.
๐๐๐๐บ๐ผ๐น๐ผ๐ด๐
๐๐๐๐๐๐๐โ๐๐โ๐๐ ๐ก๐๐๐๐๐๐ก๐๐๐๐๐, from the Latin ๐ก๐๐๐๐๐, -๐๐๐ก๐๐ , meaning swift or violent stream, torrent, torrential, and -๐๐๐๐ meaning dweller, inhabitant, in allusion to its habit of living in very strong waters. A noun in apposition.
๐ฃ๐ต๐ผ๐๐ผ ๐๐ฟ๐ฒ๐ฑ๐ถ๐
Top – ๐๐๐๐๐๐๐โ๐๐โ๐๐ ๐ก๐๐๐๐๐๐ก๐๐๐๐๐, MCP 55010, holotype, 37.4 mm SL, male. Brazil, Minas Gerais State, Alvarenga, Padre Angelo Creek near its mouth in Manhuaรงu River, Doce River basin.
Bottom – Padre Angelo Creek near its mouth in Manhuaรงu River, Alvarenga, Minas Gerais State, Brazil.
Copyright ยฉ 2024 the Author(s). Published in Ichthyology & Herpetology journal.
