title: Redescription of Gobio nigrescens from the Hari River drainage (Teleostei: Cyprinidae).
abstract: Gobio nigrescens, from the Hari River drainage, is redescribed. It represents a valid species distinguished from congeners in the adjacent Caspian and Aral Sea basins by a combination of characters: a naked breast, 16 circumpeduncular scales and 6-7 irregularly shaped, black or brown blotches on back behind dorsal-fin base.
authors.affiliation: Department of Fisheries, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Guilan, Iran.; Email: mousavi-sabet@guilan.ac.ir.
authors.forename: Hamed
authors.initials: H
authors.lastname: Mousavi-Sabet
authors.affiliation: Department of Fisheries, Tonekabon Branch, Islamic Azad University, Mazandaran, Iran.; Email: kaftarna@yahoo.com.
authors.forename: Babak
authors.initials: B
authors.lastname: Ganjbakhsh
authors.affiliation: Zoological Research Museum Alexander Koenig, Leibniz Institute for Animal Biodiversity, Adenauerallee 160, 53113 Bonn, Germany.; Email: m.geiger@zfmk.de.
authors.forename: Matthias F
authors.initials: MF
authors.lastname: Geiger
authors.affiliation: Zoological Research Museum Alexander Koenig, Leibniz Institute for Animal Biodiversity, Adenauerallee 160, 53113 Bonn, Germany.; Email: m.geiger@zfmk.de.
authors.forename: Matthias F
authors.initials: MF
authors.lastname: Geiger
authors.affiliation: German Centre for Integrative Biodiversity Research (iDiv), Deutscher Platz 5a, 04103 Leipzig, Germany.; Email: joerg.freyhof@idiv.de.
authors.forename: Jörg
authors.initials: J
authors.lastname: Freyhof
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D003530:Cyprinidae / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D017753:Ecosystem; D005260:Female; D008297:Male; D009929:Organ Size; D010802:Phylogeny; D045483:Rivers