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      A new species of Enteromius (Actinopterygii, Cyprinidae, Smiliogastrinae) from the Awash River, Ethiopia, and the re-establishment of E. akakianus

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          Abstract

          Abstract

          In the present study, populations of small-sized smiliogastrin barbs with a thickened and serrated last simple dorsal-fin ray distributed in the Main Ethiopian Rift were analysed. An integrated approach combining genetic markers and a variety of morphological methods based on a wide set of characters, including osteology and sensory canals, proved to be very productive for taxonomy in this group of fishes. The results showed that Ethiopian Enteromius species with a serrated dorsal-fin ray are distant from the true E. paludinosus (with E. longicauda as a synonym) and the so-called E. paludinosus complex involves several supposedly valid species with two distinct species occurring in the Main Ethiopian Rift area. A new species, Enteromius yardiensis sp. nov., is described from the Afar Depression in the north-eastern part of the Northern Main Ethiopian Rift. Enteromius akakianus is resurrected as a valid species including populations from the Central Main Ethiopian Rift (basins of lakes Langano, Ziway, and Awasa). No genetic data were available for E. akakianus from its type locality. Enteromius yardiensis sp. nov. is clearly distant from E. akakianus from the Central Main Ethiopian Rift by CO1 and cytb barcodes: pairwise distances between the new species and the Ethiopian congeners were 5.4 % to 11.0 %. Morphologically, the new species most clearly differs from all examined Ethiopian congeners by three specialisations which are unique in the group: the absence of the anterior barbel, the absence of the medial branch of the supraorbital sensory canal, and few, 1–3, commonly two, scale rows between the lateral line and the anus.

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          Most cited references 72

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          A Standardized Terminology for Describing Reproductive Development in Fishes

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            Continental rift evolution: From rift initiation to incipient break-up in the Main Ethiopian Rift, East Africa

             Giacomo Corti (2009)
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              East African climate pulses and early human evolution

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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2020
                13 January 2020
                : 902
                : 107-150
                Affiliations
                [1 ] University of Graz, Institute of Biology, Universitätsplatz 2, A-8010 Graz, Austria University of Graz Graz Austria
                [2 ] National Fisheries and Aquatic Life Research Centre, P.O.Box: 64, Sebeta, Ethiopia National Fisheries and Aquatic Life Research Centre Sebeta Ethiopia
                [3 ] Natural History Museum Vienna, Burgring 7, A-1010 Vienna, Austria Natural History Museum Vienna Vienna Austria
                Author notes
                Corresponding author: Gernot K. Englmaier ( gernotenglmaier@ 123456gmx.at )

                Academic editor: M. E. Bichuette

                Article
                39606
                10.3897/zookeys.902.39606
                6978609
                Gernot K. Englmaier, Genanaw Tesfaye, Nina G. Bogutskaya

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Funding
                LARIMA – Sustainable High LAnd Rivers MAnagement in Ethiopia – project (Project Number 106) funded by the Austrian Partnership Programme in Higher Education and Research for Development (APPEAR) of the Austrian Development Cooperation (ADC) and the Austrian Agency for International Cooperation in Education and Research (OeAD). Austrian Science Foundation grant (Lise Meitner Programme, M2183-B25)
                Categories
                Research Article
                Actinopterygii
                Animalia
                Chordata
                Cyprinidae
                Cypriniformes
                Osteichthyes
                Pisces
                Vertebrata
                Systematics
                Taxonomy
                Cenozoic
                Africa
                East Africa
                Ethiopia

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