【摘要】 2008年5月,在广西壮族自治区靖西县禄洞村珠江水系采集到一批条鳅标本。经鉴定,为云南鳅属(Yunnanilus)一新种。新种靖西云南鳅(Yunnanilus jinxiensis)属于侧纹云南鳅种组(Yunnanilus pleurotaenis group)。但新种全身除胸腹部外被有鳞片;侧线较长,具有15—20个侧线管孔;背鳍分枝鳍条8;胸鳍分枝鳍条13—14;鳔两室,后室发达;尾鳍凹形;体长为体高的3.9—4.6倍,为头长的4.1—4.4倍,为尾柄高的7.5—9.0倍;头长为眼径的5.5—6.7倍,为眼间距的2.2—2.4倍等特征,可将新种与该种组内的其他种类相区分。更多还原

【Abstract】 A nemacheiline loach Yunnanilus jinxiensis sp. nov. has been discovered in collections from a Pearl River Drainage in Ludong village, Jingxi county, and Guangxi of China in May 2008. Yunnanilus jinxiensis is a new member of the Yunnanilus pleurotaenis group. It can be distinguished from all other congeners in this group by the following characters: body entirely covered by scales, except between pectoral fins and pelvic fins; lateral line present, with 15–20 pores; dorsal fin with 8 branched rays; pectoral fin with 13–14 branched rays; the air bladder has two chambers, the anterior ones into bony capsules and a large free posterior chamber, filling body cavity; caudal fin slightly emarginated; body depth 3.9–4.6 times the standard length (SL); head length 4.1–4.4 times SL; caudal peduncle depth 7.5–9.0 times SL; eye diameter 5.5–6.7 times the head length (HL); interorbital width 2.2–2.4 times HL.更多还原