Sinocyclocheilus xingrenensis (Cypriniformes, Cyprinidae), a new underground fish from Guizhou Province, Southeastern China Author Xiao, Ming-Yuan https://orcid.org/0009-0003-5555-9805 School of Life Sciences, Guizhou Normal University, Guiyang 550001, Guizhou, China Author Wang, Jia-Jia https://orcid.org/0009-0007-8637-5469 School of Life Sciences, Guizhou Normal University, Guiyang 550001, Guizhou, China Author Luo, Tao 0000-0003-4186-1192 School of Karst Science, Guizhou Normal University, Guiyang 550025, Guizhou, China & School of Life Sciences, Yunnan University, Kunming 650504, Yunnan, China Author Zhou, Jia-Jun 0000-0003-1038-1540 Southwest United Graduate School, Kunming 650092, Yunnan, China Author Xiao, Ning Zhejiang Forest Resource Monitoring Center, Hangzhou 310020, Zhejiang, China Author Zhou, Jiang 0000-0003-1560-8759 School of Life Sciences, Guizhou Normal University, Guiyang 550001, Guizhou, China text Zoosystematics and Evolution 2025 2025-02-24 101 2 419 436 journal article 308239 10.3897/zse.101.141444 5e611129-7f4d-4160-9ea3-ab9293f69134 F445B038-1840-4CFF-AD1F-A4A5095E1265

Table 3. Comparison of the diagnostic characters of the new species described here with those selected for the 27 species of the S. tingi group and the four unassigned species (the last four) within the genus Sinocyclocheilus. Grey shading indicates a clear difference in characters compared to that of Sinocyclocheilus xingrenensis sp. nov.

Species	Body lateral markings	Dorsal-fin rays	Pectoral-fin rays	Anal-fin rays	Pelvic-fin rays	Caudal - fin rays	Lateral-line scales / pores	Body scales	Tip of pectoral fin reaching to pelvic-fin	Tip of pelvic-fin rays reaching to anus	Source
S. xingrenensis sp. nov.	Present	iii, 6–7	i, 12–16	iii, 5	i, 8	15–18	65–77	No	No	No	This study
S. aluensis	Present	iii, 7	i, 13–16	ii, 5	i, 7–9	15–17	71–75	Yes	No	No	Li et al. 2005
S. angustiporus	Present	iv, 7	i, 14	iii, 5	i, 8	16–17	70–74	Yes	No	No	Wu et al. 1989; This study
S. anophthalmus	Absent	iv, 8	i, 15–16	iii, 5	i, 8	16	52–56	Yes	Yes	No	Chen et al. 1988 a
S. grahami	Present	iii, 7	i, 15–17	iii, 5	i, 8–9	16	61–69	Yes	No	No	Zhao and Zhang 2009
S. guishanensis	Present	iii, 7	i, 13–16	iii, 5	i, 7–8	15–16	73–80	Yes	No	No	Li et al. 2003 a
S. huaningensis	Present	iii, 7	i, 16	iii, 5	i, 8	16	59–67	Yes	No	Yes	Li et al. 1998
S. huizeensis	Present	iii, 7	i, 15–16	iii, 5	i, 10	18	70–73	Yes	No	No	Cheng et al. 2015
xiejiahuai	Absent	iii, 6 ½	i, 13	iii, 5	i, 7	17	74	No	No	No	Fan et al. 2024
S. bannaensis	Present	iii, 8	i, 9	ii, 5	i, 9	16	47	Yes	Yes	No	Li et al. 2019
S. maculatus	Present	iii, 7	i, 14–15	iii, 5	i, 7-8	16	81–88	Yes	No	No	Zhao and Zhang 2009
S. maitianheensis	Present	iii, 7	i, 14–15	iii, 5	i, 9	18	70–82	Yes	No	Yes	Li 1992
S. malacopterus	Present	iii, 7	i, 14–18	iii, 5	i, 9	15–16	67–81	Yes	No	No	Chu and Cui 1985
S. longifinus	Absent	iii, 7	i, 16	ii, 5	i, 8	17	70–72	No	Yes	Yes	Li et al. 1998
S. macroscalus	Present	iv, 7	i, 15–16	iii, 5	i, 8	NA	70–79	Yes	No	No	Li 1992
S. macrocephalus	Absent	iv, 7	i, 15–17	iii, 5	i, 8	16	72–78	Yes	No	No	Li 1985
S. lateristritus	Present	iv, 7	i, 15–16	iii, 5	i, 8	17	75–91	Yes	No	No	Li 1992
S. purpureus	Present	iv, 6–7	i, 16	iii, 5	i, 8	NA	63–67	Yes	No	No	Li 1985
S. qiubeiensis	Present	iii, 7	i, 14–17	iii, 5	i, 8–9	16	67–81	Yes	No	No	Li et al. 2002 b
S. qujingensis	Absent	iii, 7	i, 16	iii, 5	i, 8	16	70–79	Yes	No	No	Li et al. 2002 c
S. robustus	Present	iv, 7	i, 13	iii, 5	i, 6	16	72	No	No	No	Chen et al. 1988 b; This study
S. wumengshanensis	Present	iii, 7	16	ii, 5	i, 8	16	67–76	Yes	Yes	Yes	Li et al. 2003 a
S. xichouensis	Present	iii, 6–7	i, 14–16	iii, 5	i, 8–9	NA	74 – 88	Yes	Yes	No	Pan et al. 2013
S. tingi	Present	iv, 7	i, 14–16	iii, 5	i, 6–8	16	62–73	Yes	No	No	Zhao and Zhang 2009
S. yangzongensis	Absent	iii, 7	i, 16	iii, 5	i, 9	16	71–81	Yes	No	No	Zhao and Zhang 2009
S. yimenensis	Present	iii, 7	i, 14–15	ii, 5	i, 8	16-17	70–79	Yes	No	No	Li et al. 2005
S. oxycephalus	Present	iii, 7	i, 15–16	iii, 5	i, 8–9	17	62–75	No	No	No	Li 1985; Zhao and Zhang 2009
S. wenshanensis	Present	iii, 7	i, 13–15	ii, 5	i, 7–8	14–15	67–72	Yes	No	Yes	Yang et al. 2018
S. gracilis	Absent	NA	NA	NA	NA	NA	NA	Yes	NA	NA	Li and Li 2014
S. pingshanensis	Absent	iii, 7	i, 13–15	ii, 5	i, 7–8	16	75–78	Yes	Yes	No	Wu et al. 2018
S. luolouensis	Present	iii, 7	i, 13–14	iii, 5	i, 7–8	16–17	40–49	Yes	Yes	Yes	Lan et al. 2013
S. wui	Absent	iii, 7	i, 14–15	ii, 5	i, 7–8	14–15	79–81	Yes	No	No	Li and An 2013