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Jorge Garcia (1)

Abstract: Despite being one of the better-surveyed regions in Brazil, the upper Rio Paraná basin still reveals relatively numerous large new species of fish. Here, we present a new uniquely coloured species of the highly diverse, armored catfish genus Hypostomus. The new species was mostly found in the Rio Grande basin, plus a single record in the main channel of the Rio Paraná. Hypostomus caudofasciatus n. sp. is remarkable by its large eyes, and it completely differs from congeners by having four longitudinal dark stripes on the flanks and a caudal fin with conspicuous longitudinal dark stripes on a yellow background (unique in Hypostomus), (Zawadzki, C.H. & Azevedo, F.M. 2024). The Hypostomus genus has 7 soft rays to the dorsal fin whereas the similar looking Pterygoplichthys species have 10 soft dorsal fin rays. Aquarium Care: Will need a good sized aquarium of 5ft (150cm.) or over due to their final adult size. As this genus in the main are messy eaters, good water quality and filtration would need to be adhered to. Diet: Will eat all manner of foods in the aquarium, vegetable, tablet, pellet foods and a good quality flake food. Etymology: The specific name caudofascitus: auda (L.), tail; fasciatus (L.), banded or striped, referring to conspicuous longitudinal dark stripes on the caudal fin.

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Loricariidae

South America: Rio Grande drainage, Rio Paraná basin, Brazil.

17.0cm. (6¾ins)

20-25°c (67-77°f.)

6.0-7.5.

Garcia, Jorge; pers. comm. 2025.
Tencatt, Luiz; pers. comm. 2025.
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.
www.suedamerikafans.de
Zawadzki, C.H. & Azevedo, F.M. (2024) Hypostomus caudofasciatus (Teleostei: Loricariidae), a new remarkably colored species from the upper Rio Paraná basin in Brazil. Zootaxa, 5471 (3), 318–328.