taxonID	type	description	language	source
9F9607E43ED15CB7A313EEF43F245811.taxon	description	Figs 4, 5, Table 2	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
9F9607E43ED15CB7A313EEF43F245811.taxon	diagnosis	Diagnosis. Bagarius dolichonema can be distinguished from congeners by the following combination of characteristics: lateral margin of frontal straight, not forming brow ridge, dorsal spine strong (width 9.9 – 14.1 times its length), weakly notched antero-dorsal margin on pterygiophore of first dorsal-fin, filamentous extensions of pectoral-fin spine beyond posterior of pelvic-fin base and some reaching anus, neural spines of 4 th – 6 th vertebrae immediately anterior to adipose fin distally slightly flattened, adipose-fin origin at vertical through or very slightly posterior to anal-fin origin, caudal peduncle slender (3.8 – 4.6 % SL).	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
9F9607E43ED15CB7A313EEF43F245811.taxon	description	Description. Head depressed; body subcylindrical, becoming more laterally compressed at caudal peduncle. Dorsal profile rising evenly from tip of snout to origin of dorsal fin, then sloping gently ventrally from origin of dorsal fin to end of caudal peduncle. Ventral profile straight to anal-fin base, then sloping gently dorsally from anal-fin base to end of caudal peduncle. Anus and urogenital openings located approximately 1 / 2 to 2 / 3 distance between base of last pelvic-fin ray and base of first anal-fin ray. Skin tuberculated, with tubercles of varying sizes on sides of body; larger tubercles arranged in longitudinal rows along dorsal head and dorsal lateral surfaces of body. Lateral line complete and situated mid-laterally. Vertebrae 21 + 20 = 41 * (4). Head depressed and broad, triangular when viewed laterally. Snout prominent. Anterior and posterior nares adjacent, separated by base of nasal barbel. Gill opening broad, extending from ventral margin of post-temporal to isthmus. Dorsal surface of head covered by thick skin and ovoid tubercles. Eye small and ovoid; lateral margin of frontal not forming brow ridge. Base of supraoccipital spine wide, occipital bone triangular. Barbels in four pairs. Maxillary barbel subtended by large skin flap along posterior edge of proximal half of barbel connected with side of snout; extending to middle of pectoral-fin base. Nasal barbel short, just extending to posterior margin of posterior nares. Outer mandibular barbel extending to vertical line through eye. Inner mandibular barbel about 2 / 3 of outer mandibular barbel in length. Mouth inferior, most anterior part of premaxillary tooth band exposed when mouth closed. Oral teeth cone-shaped, varying in size, and irregularly aligned on all tooth-bearing surfaces. Premaxillary teeth form a broad semilunar band, interrupted at midline. Dorsal fin located above anterior one-third of body, with I, 6 rays; dorsal spine straight and strong, smooth both on anterior and posterior margins, width 9.9 – 14.1 times its length. Adipose fin triangular, with anterior margin straight or slightly concave. Adipose fin origin at vertical through or very slightly posterior to anal-fin origin. Caudal fin rays i, 7, 7, i or i, 7, 8, i, strongly forked, with upper lobe longer than lower lobe and principal rays. Filamentous extensions with caudal fin extremely extending. Anal fin with straight anterior margin and concave posterior margin; with unbranched ray iii, branched ray 8, 9, or 10 rays. Pelvic-fin origin at vertical through posterior end of dorsal-fin base. Pelvic fin with slightly convex margin and i, 5 rays; tip of pelvic fin usually not reaching anal-fin origin, rarely reaching. Pectoral fin with I, 10, I, 11, I, 12, I, 13 rays; posterior margin slightly concave. Pectoral-fin spine with filamentous extension beyond anterior pelvic-fin base, or even reaching anus, smooth on anterior margin, serrated on posterior margin.	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
9F9607E43ED15CB7A313EEF43F245811.taxon	etymology	Etymology. The epithet name “ dolichonema ” comes from the Greek adjective “ dolikhos, ” meaning long, and the noun “ nēma, ” meaning thread or yarn, which refers to the length of filamentous extensions with pectoral-fin spines and caudal fins that are the longest in congeners except for B. bagarius. The suggested common name in Chinese is 长丝魾 (Pinyin: chang si pi).	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
9F9607E43ED15CB7A313EEF43F245811.taxon	distribution	Distribution. Known to be found in the Irrawaddy River Basin in Myanmar (Figs 6, 8) and the Manipur River in India, with its presence also expected in the Chinese part of the Irrawaddy River Basin.	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
0187F013E9F755F885024AB388211123.taxon	description	Figs 1, 2, Table 2	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
0187F013E9F755F885024AB388211123.taxon	diagnosis	Diagnosis. Bagarius protos can be distinguished from congeners by having the following combination of characteristics: eye small (5 – 8 % HL), lateral margin of frontal straight, not forming brow ridge, strongly notched in antero-dorsal margin of the first dorsal-fin pterygiophore, dorsal spine strong (width 10.6 – 14.4 times its length), filamentous extensions of pectoral-fin spine reaching posterior of anal-fin base, neural spines of 4 th – 6 th vertebrae immediately anterior to adipose fin distally slender, adipose-fin origin at vertical through or very slightly posterior to anal-fin origin, caudal peduncle deep (4.2 – 5.1 % SL).	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
0187F013E9F755F885024AB388211123.taxon	description	Description. Morphometric data are shown in Table 2. Head depressed, body subcylindrical, slightly compressed laterally at origin of anal fin. Dorsal profile rising uniformly from tip of snout to origin of dorsal fin, body depth at maximum at the origin of the dorsal fin, then sloping gently ventrally from origin of dorsal fin to end of caudal peduncle. Ventral profile flattened to base of anal fin, and then sloping gently dorsally from anal-fin base to caudal-fin base. Anus and urogenital openings located approximately 1 / 2 to 2 / 3 distance between end of pelvic-fin base and origin of anal-fin ray. Skin keratinized, with tubercles of various sizes on both sides of body; larger tubercles sparsely placed longitudinally along dorsal surface of head and dorsum. Lateral line complete, situated in midline of body. Vertebrae 23 + 20 = 43 * (4). Head depressed and wide. Snout long, about half of head length. Anterior and posterior nares adjacent and separated. Gill opening broad, extending to isthmus. Dorsal surface of head covered by thick skin and ovoid tubercles. Eye small and ovoid; lateral margin of frontal not forming brow ridge. Barbels in four pairs, including a pair of maxillary barbels, one pair of nasal barbels, and two pairs of mandibular barbels. Maxillary barbel subtended by large skin flap along posterior edge of proximal half of barbel; extending to middle of pectoral-fin base. Nasal barbel short, extending to posterior margin of posterior nares. Outer mandibular barbel extending beyond vertical line through eye. Inner mandibular barbel about 2 / 3 length of outer mandibular barbel. Mouth inferior, with premaxillary dental bands partially exposed when mouth closed. Oral teeth cone-shaped, varying in size, and irregularly aligned on all tooth-bearing surfaces. Premaxillary teeth form a broad semilunar band, interrupted at midline. Dorsal fin located at midpoint of body, with 6 branched fin rays; dorsal spine straight and strong, with smooth anterior and posterior margins, width 10.6 – 14.4 times its length. Adipose fin triangular, origin at vertical through or very slightly posterior to anal-fin origin. Caudal fin strongly forked, upper lobe longer than lower lobe, with i, 7, 8, i principal rays. Anal fin with iii or iv unbranched rays, 8 – 9 branched rays, anterior margin straight, posterior margin slightly concave. Position of pelvic-fin origin not settled, anterior, vertical, or posterior to posterior end of dorsal-fin base. Pelvic fin with i, 5 rays; tip of adpressed fin beyond anus, rarely reaching anal-fin origin. Pectoral fin with I, 11, I, 12, I, 13 rays; posterior margin slightly concave. Pectoral-fin spine with filamentous extensions comparatively short, reaching anterior pelvic-fin base. Spine with smooth anterior margins and serrated posterior margins.	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
0187F013E9F755F885024AB388211123.taxon	etymology	Etymology. The epithet name “ protos ” consists of the Greek “ protos, ” meaning original (at first), referring to the species being in the most primitive position in the phylogenetic tree of genus Bagarius. The suggested common name in Chinese is 原魾 (Pinyin: yuan pi).	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
0187F013E9F755F885024AB388211123.taxon	distribution	Distribution and ecology. The new species is distributed in the mainstream of the Nujiang River and the Nanting River in China (Figs 3, 8), also expected to occur on the Salween River in Myanmar and Thailand.	en	Zeng, Yu-Yang, Pu, Xin-Rui, Lei, Hao-Tian, Oo, Thaung Naing, Chen, Xiao-Yong (2025): A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosystematics and Evolution 101 (3): 1123-1136, DOI: 10.3897/zse.101.145776
