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02/10/2025
New fish just dropped!
𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 𝑠𝑒𝑖𝑑𝑒𝑙𝑖 and 𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 𝑦𝑢𝑑𝑗𝑎, two new species of loricariid catfish are described from the rio Xingu, Amazon, Brazil.
Open-access - https://www.scielo.br/j/ni/a/VVCvG6vydwJXhgQ5z3gYpJb/
Both newly described species have been imported into the aquarium trade under various codes and names, the highly variable 𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 𝑠𝑒𝑖𝑑𝑒𝑙𝑖 as King Tiger Pleco, Golden King Tiger, L66, L236, L287, L333, L399, L400 (and perhaps some other L code numbers) and the variable 𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 𝑦𝑢𝑑𝑗𝑎 as False Zebra pleco, Peruvian (sic) Panther pleco or L174.
𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵 𝗧𝗶𝘁𝗹𝗲
Two new species of 𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 (Siluriformes: Loricariidae) from the rio Xingu, Amazon, Brazil
𝗖𝗶𝘁𝗮𝘁𝗶𝗼𝗻
Sousa, L. M. de ., Sousa, E. B. de ., Ribeiro, R. de O., Sabaj, M. H., Zuanon, J., & Py-Daniel, L. R.. (2025). Two new species of 𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 (Siluriformes: Loricariidae) from the rio Xingu, Amazon, Brazil. Neotropical Ichthyology, 23(1), e240080. https://doi.org/10.1590/1982-0224-2024-0080
𝗔𝗯𝘀𝘁𝗿𝗮𝗰𝘁
𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 was proposed as a monotypic genus for a highly unique species, 𝐻. 𝑧𝑒𝑏𝑟𝑎, known only from a short stretch of the Middle rio Xingu on the Brazilian Shield.
Subsequent studies added eight species, all described from river systems draining the Guiana Shield. Analysis of 𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 specimens from the middle and lower Xingu detected two new species that can be separated from its congeners based on color pattern and body size of adults, and that are well known from the ornamental fish trade. Due to their non-overlapping distributions, the prospects of conserving the two species are quite different.
One of the species is relatively safe due to its relatively large distribution throughout the Lower Xingu channel up to the downstream end of Volta Grande do Xingu, while the other is in need of urgent protection because it is restricted to a short stretch of the Middle Xingu channel at depths greater than 15 meters, and its distribution lies entirely within the impact zone of the Belo Monte Hydroelectric Power Plant Complex.
𝗣𝗵𝗼𝘁𝗼 𝗖𝗿𝗲𝗱𝗶𝘁
Left - Variation in color patterns of 𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 𝑠𝑒𝑖𝑑𝑒𝑙𝑖 collected along the distributional range of the species in rio Xingu. Specimens not preserved. Scale bars = 1 cm.
Right - Body shape and color pattern variations in live specimens of 𝐻𝑦𝑝𝑎𝑛𝑐𝑖𝑠𝑡𝑟𝑢𝑠 𝑦𝑢𝑑𝑗𝑎 shown to scale. Specimens not preserved. Scale bar = 1 cm.
Copyright © 2025 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/