A new freshwater goby of Rhinogobius Gill, 1859 (Teleostei, Gobiidae) from the Jangshi basin, Fujian Province, southeastern China Author Chen, I-Shiung Institute of Marine Biology, National Taiwan Ocean University, Keelung, 202301, Taiwan, R. O. C. & Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, 202301, Taiwan, R. O. C. Author Chen, Kwang-Yiao Institute of Marine Biology, National Taiwan Ocean University, Keelung, 202301, Taiwan, R. O. C. Author Wang, Shen-Chih 0009-0000-1708-0455 Institute of Marine Biology, National Taiwan Ocean University, Keelung, 202301, Taiwan, R. O. C. scw@mail.nmmst.gov.tw text Zootaxa 2024 2024-12-10 5550 1 369 380 https://doi.org/10.11646/zootaxa.5550.1.37 journal article 10.11646/zootaxa.5550.1.37 1175-5326 14389536 FF840A80-8E5B-46B2-B110-56293F7E9A0A Diagnostic key to all nominal species of Rhinogobius with longitudinal infraorbital papillae pattern from Fujian Province , PR China 1a Pectoral fin rays modally 19–20, predorsal scales 10–16................................. R. leavelli (All main basins) 1b Pectoral fin rays no more than 18; predorsal scales no more than 10............................................. 2 2a Vertebrae 28................................................................ R. ponkouensis (Hanjiang basin) 2b Vertebrate 26–27...................................................................................... 3 3a Longitudinal scale rows 33–34; cheek entirely blackish brown striped in male.......... R. lianchengensis (Minjiang basin) 3b Longitudinal no more than 32; cheek no such mark in male.................................................... 4 4a Cheek with many rounded spots, branchiostegal membrane with several parallel red stripes in male................................................................................................. R. reticulatus (Minjiang basin) 4b Cheek and branchiostegal membrane without such marks...................................................... 5 5a Pore ω1 present, pectoral fin base with reticulated orange pattern in male............ R. xianshueiensis (Mulan River basin) 5b Pore ω1 absent, pectoral fin base without such pattern in male.................................................. 6 6a Infraorbital stripe long and well extending downward to rear edge of both jaws or ventral edge of cheek in male.......... 7 6b Infraorbital stripe/mark absent or short and not extending ventrally to rear edge of both jaws in male................... 8 7a Cheek with a conspicuous arrow-shape, red to reddish brown infraorbital mark always following by 4 oblique dark stripes in male........................................................................... R. sagittus (Minjian basin) 7b Cheek with 2–4 oblique dark stripes in male................................................................ 9 8a Pectoral fin rays modally 17; 27 vertebrae; cheek with 3 thin black lines and blackish brown infraorbital stripe in male............................................................................... R. changtinensis (Hanjiang basin) 8b Pectoral fin rays modally 16; 26 vertebare; cheek with 2 thin brown lines and bright red infraorbital stripe in male.................................................................................. R. rubrolineatus (Minjiang basin) 9a Longitudinal scale rows 25–27; 26 vertebrae; branchiostegal membrane spotless in male.................................................................................................... R. longtongyanensis (Dongshi basin) 9b Longitudinal scale rows 28–32; 27 vertebrae; branchiostegal membrane with orange to red rounded spots in male........ 10 10a Predorsal scales modally 9; cheek with 4 oblique thin black stripes; caudal fin with central yellowish mark............................................................................... R. jangshiensis new species (Jangshi basin) 10b Predorsal scales modally 7; cheek with 3 oblique thin black stripes; caudal fin without such mark............................................................................................... R. lognyanensis (Julongjiang basin)