Two new species of glyptosternine catfish of the genus Sineuchiloglanis (Teleostei, Siluriformes, Sisoridae) from the upper Yangtze River drainage, China Author Lv, Hai-Min https://orcid.org/0009-0009-7713-6022 Institute of Hydrobiology, Chinese Academy of Sciences, No. 7 Donghu South Road, Wuchang District, Wuhan 43007, China & University of Chinese Academy of Sciences, No. 1 Yanqi Lake East Road, Huairou District, Beijing 101408, China Author He, De-Kui 0000-0002-4001-826X Institute of Hydrobiology, Chinese Academy of Sciences, No. 7 Donghu South Road, Wuchang District, Wuhan 43007, China Author Lei, Chun-Yun Yunnan Institute of Fishery Sciences Research, No. 25 Dianchi Road, Xishan District, Kunming, Yunnan 650111, China Author Liu, Fei 0000-0003-4404-0971 Institute of Hydrobiology, Chinese Academy of Sciences, No. 7 Donghu South Road, Wuchang District, Wuhan 43007, China text ZooKeys 2026 2026-02-04 1268 139 162 journal article 314134 10.3897/zookeys.1268.173139 b435e2e6-d1bb-4f5d-8111-85b5cfe5093a 4E76E399-EAD2-4FAA-A95F-D599AC4982A5

Table 3. Morphometric data for species of Sineuchiloglanis chishuiensis sp. nov. and S. baishuiensis sp. nov.

	Sineuchiloglanis chishuiensis sp. nov. (n = 22)				Sineuchiloglanis baishuiensis sp. nov. (n = 22)
	Min	Max	Mean	S. D.	Min	Max	Mean	S. D.
Standard length (mm)	70.7	162.1	108.6	25.3	74.5	178.8	113.7	35.1
Percentage of standard length
Predorsal length	31.2	37.1	33.8	1.5	29.5	37.4	33.7	1.7
Prepectoral length	16.3	21.7	19	1.2	16.4	20.2	18	1
Prepelvic length	39.1	45	42.1	1.3	39.3	43.8	41.5	1.1
Pre-anal length	64.4	71.9	68.5	1.8	67.7	74.1	70.7	1.7
Dorsal-fin base length	8.4	10.3	9.3	0.6	7.9	11.4	9.7	0.8
Body depth	11.7	18.2	14.4	1.8	11.5	17.4	14.5	1.5
Body depth at anus	11.1	17	13	1.5	11.2	17.1	13.7	1.3
Head length	19.9	26.4	22.7	1.4	20	24	22	1
Head width	18.5	24.5	21.1	1.6	18.1	21	19.9	0.9
Head depth	8.8	12.3	10.7	1	8.7	11.4	10.1	0.7
Pectoral-fin length	21.1	28.2	24.5	1.8	21.2	29.5	24.4	1.9
Pelvic-fin length	15.2	20.5	17.8	1.3	14.5	20.5	17.8	1.3
Anal-fin base length	5.6	8.4	6.7	0.7	6	7.7	6.8	0.4
Caudal-fin length	12.6	17.4	14.3	1.3	11.9	16.3	13.7	1.2
Adipose-fin base length	27.8	32.5	30.2	1.4	24.5	32.8	28.3	2.3
Dorsal to adipose distance	14.1	23.2	19.5	2.6	15.5	25.5	21.4	2.5
Pelvic-fin origin to anal-fin origin length	23.4	28.5	26.6	1.6	26.1	32	29	1.7
Pelvic insertion to adipose origin	15.4	19.5	17.4	1.2	17.3	22.3	19.2	1.2
Post-adipose distance	8.2	12.7	9.8	1.3	8.1	11.2	9.4	0.8
Caudal-peduncle length	21.5	29.2	24.9	1.8	20.6	26.7	23.2	1.7
Caudal-peduncle depth	6.6	9.5	7.8	0.8	6.3	8.7	7.7	0.7
Percentage of head length
Snout length	52.8	57.7	55.2	1.2	53.7	57.3	55.4	1
Interorbital distance	24.1	28.8	26.5	1.3	22.8	29.6	26	1.8
Eye diameter	6.8	9.1	7.7	0.6	6.1	9.2	8	1
Head length behind the eyes	35.6	40.3	37.6	1.2	35.4	39.4	37.6	1
Head depth	38.9	53.1	47.3	4	42	48.4	45.7	1.6
Nasal barbel length	24.9	35	31.3	2.6	23.3	35.1	29.7	2.8
Maxillary barbel length	67.1	84.8	77.5	4.5	65.9	82.1	73.7	3.7
Inner mandibular barbel length	15.5	20.6	17.7	1.5	14.4	19.1	16.6	1.4
Out mandibular barbel length	23.8	30.2	27.4	1.7	23.1	29.2	25.9	1.7
Percentage of caudal-peduncle length
Caudal-peduncle depth	27.1	40.3	31.3	3.4	25.9	40.6	33.6	4.5
Percentage of pectoral-fin length
Pectoral-fin width	53	70.5	62.7	4.2	61	78.2	67.9	4.9
Percentage of pelvic-fin length
Pelvic-fin width	43	68.4	58.2	6	53.6	76.6	61.9	6.1