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Costa et al. 2022 (3)

Habitat: Trichomycterus araxa occurs in the Rio Quebra Anzol drainage, which is part of the Rio Paranaíba drainage, a main tributary of the upper Rio Paraná basin, in altitudes about 940– 1020 m asl. In the type locality area, the new species was collected in shallow, moderate fast-flowing streams, about 40–50 cm deep, and about 3–5 m wide, with a well-preserved marginal vegetation. The stream bottom comprised gravel, sand and pebbles. The new species was collected buried in the stream bank, but smaller specimens were sporadically seen swimming above gravel substratum. See Costa et al. (2022a) for a list of species occurring in this area, where this species is identified as Trichomycterus sp. (Costa et al. 2022). Etymology: Araxa is a reference to the occurrence of the new species in the region of Araxá, a historical Brazilian city founded in the 18th century, during the colonial period. The word araxa is possibly derived from the Tupi-Guarani to designate some native people formerly inhabiting the region (Costa et al. 2022).

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Trichomycteridae

South America: Rio Quebra Anzol drainage, Brazil. Type locality: Brazil: Minas Gerais State: Araxá Municipality: stream tributary to Rio Capivara, a tributary of Rio Quebra Anzol, a tributary of the Rio Araguari subdrainage, Rio Paranaíba drainage, Rio Paraná basin, at Reserva Particular do Patrimônio Natural São Sebastião, 19°40'26"S, 47°02'24"W, about 970 m. (A.M. Katz et al., 3 November 2021).

5.5cm. (2¼ins)

25-28°c (77-83°f.)

6.0-7.0.

Costa, Wilson J. E. M., José L. O. Mattos, Wagner Martins Santana Sampaio, Patrícia Giongo, Frederico B. De Almeida & A. M. Katz. 2022. Phylogenetic relationships of a new catfish of the genus Trichomycterus (Siluriformes, Trichomycteridae) from the Brazilian Cerrado, and the role of Cenozoic events in the diversification of mountain catfishes. Zoosystematics and Evolution 98(1): 151-164.