The catfish distributions sticky

For the discussion of catfish systematics. Post here to draw our attention to new publications or to discuss existing works.
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Silurus glanis in Iraq

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Jawad, L. A., Abed, J., Mohsen, Z., & Al-Janabi, M. (2021). A confirmed record of the European catfish Silurus glanis L., 1758 (Actinopterygii: Siluriformes: Siluridae) from the southern marshes of Iraq, with a new anatomical set of characters to separate S. glanis and S. triostegus. Integrative Systematics: Stuttgart Contributions to Natural History, 3(1), 85-100.
Abstract
Investigations conducted in the southern Iraq freshwater systems allowed the authors to collect the European catfish, Silurus glanis L., 1758. These are the first confirmed records of S. glanis from the freshwater systems in Lower Mesopotamia, based on 13 adult specimens, each 325–525 mm in total length. Furthermore, a new set of anatomical characters of S. glanis and S. triostegus from Chibayish marsh area, south of Iraq, was examined to reveal similarities and differences between the two Silurus species. In addition to the traditional separation of the two species of Silurus by number of barbels, these two species can now be recognised based on a new set of morphological and osteological features.
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Re: The catfish distributions sticky

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SILVIA YASMIN LUSTOSA-COSTA, SERGIO BOGAN, LUIZ JARDIM DE QUEIROZ, JUAN I. MONTOYA-BURGOS, ARIEL PARACAMPO, TOMAS MAIZTEGUI, & YAMILA P. CARDOSO. (2021). Distribution extension of Hypostomus uruguayensis (Siluriformes: Loricariidae) in Argentina and first record for Bolivia. Molecular, morphology and biogeography data. Zootaxa, 4996(1): 2 July 2021.

https://DOI.10.11646/ZOOTAXA.4996.1.12
https://mapress.com/zt/article/view/zootaxa.4996.1.12
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First record of Plotosus canius in Laos

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Hortle, KG & S Phommanivong, 2021. The first record from Laos of Plotosus canius. Ichthyological Exploration of Freshwaters doi:10.23788/IEF-1167.

Abstract

We record the first capture from Laos of the diadromous eel-tail catfish Plotosus canius as a single specimen of total length 1111 mm from Phapheng Channel, which is the most easterly anabranch of the Mekong in the Khone Falls system in southern Laos. The capture location is about 2.5 km downstream of Phapheng Waterfall and about 2.1 km upstream of the Cambodian border with Laos. As the location is about 720 km from the sea and at least 500 km upstream of any possible saline influence, this record shows that some large individuals of this diadromous species, which breeds in brackish waters, may penetrate long distances into freshwaters, where they feed on crabs and molluscs.
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Re: The catfish distributions sticky

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Henschel, E., & Lujan, N. K. (2021). Range extension of the miniature pencil‐catfish Potamoglanis wapixana (Siluriformes: Trichomycteridae) into the Essequibo River basin, Guyana. Journal of Fish Biology.

https://onlinelibrary.wiley.com/doi/abs ... /jfb.14841
Abstract
Morphological examination of Potamoglanis specimens from three localities in the Essequibo River basin, Guyana, and one location in the Branco River basin, Brazil, confirmed their identification as P. wapixana – a species originally described from only the Branco River basin. Morphological similarity of these miniature catfishes on opposite sides of the Rupununi savannah watershed divide and new records from lentic habitat suggest that either their modern populations predate the Pliocene division of the Branco and Essequibo rivers or that the species is capable of living in and/or migrating across the Rupununi Portal – a seasonally flooded hydrological connection known to facilitate movement of mostly much larger fishes between the Branco and Essequibo basins.
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