identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
E81ECBBCBBB85648B8A4BC629D466CF0.text	E81ECBBCBBB85648B8A4BC629D466CF0.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Rhinogobius mengyangensis Liu & Chen & Shu & Huang & Liu & Yu 2026	<div><p>Rhinogobius mengyangensis sp. nov.</p><p>Figs 1, 2, 3, 4, 5, 6; Tables 1, 2</p><p>Holotype.</p><p>• IHB 0202506006, male, 53.1 mm (Fig. 2); <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.1275&amp;materialsCitation.latitude=30.96028" title="Search Plazi for locations around (long 104.1275/lat 30.96028)">Mengyang River</a> [濛阳河], Mengyang Town [濛阳镇], Pengzhou City [彭州市], Chengdu City [成都市], Sichuan Province, China, 30°57'37"N, 104°07'39"E, leg. Shuai Zhang, November 03, 2023 .</p><p>Paratypes (n = 14).</p><p>• IHB 0202506007, female, 49.5 mm (Fig. 2), other information same as holotype; • IHB 0202506008 –09, male, 38.66–54.92 mm, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.10944&amp;materialsCitation.latitude=30.070002" title="Search Plazi for locations around (long 103.10944/lat 30.070002)">Mingshanhe River</a> [名山河], Mingshan District [名山区], Yaan City [雅安市], Sichuan Province, China, 30°04'12"N, 103°06'34"E, leg. Shuai Zhang, August 25, 2023 ; • IHB 0202506010 –12, female, 37.94–40.10 mm, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.10944&amp;materialsCitation.latitude=30.070002" title="Search Plazi for locations around (long 103.10944/lat 30.070002)">Mingshanhe River</a> [名山河], Mingshan District [名山区], Yaan City [雅安市], Sichuan Province, China, 30°04'12"N, 103°06'34"E, leg. Shuai Zhang, August 25, 2023 ; • SCSCS 20250601 –03, male, 46.90–59.32 mm, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.09056&amp;materialsCitation.latitude=30.955833" title="Search Plazi for locations around (long 104.09056/lat 30.955833)">Baituhe River</a> [百土河], Pengzhou City [彭州市], Chengdu City [成都市], Sichuan Province, China, 30°57'21"N, 104°05'26"E, leg. Shuai Zhang, July 30, 2023 ; • SCSCS 20250604 –05, male, 43.80–46.70 mm, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.564445&amp;materialsCitation.latitude=30.644722" title="Search Plazi for locations around (long 103.564445/lat 30.644722)">Aihe River</a> [矮河], Dayi County [大邑县], Chengdu City [成都市], Sichuan Province, China, 30°38'41"N, 103°33'52"E, leg. Shuai Zhang, August 12, 2024 ; • SCSCS 20250606 –07, female, 47.4–51.2 mm, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.564445&amp;materialsCitation.latitude=30.644722" title="Search Plazi for locations around (long 103.564445/lat 30.644722)">Aihe River</a> [矮河], Dayi County [大邑县], Chengdu City [成都市], Sichuan Province, China, 30°38'41"N, 103°33'52"E, leg. Shuai Zhang, August 12, 2024 ; • SCSCS 20250608, male, 43.40 mm, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.399445&amp;materialsCitation.latitude=29.733889" title="Search Plazi for locations around (long 103.399445/lat 29.733889)">Chuanxihe River</a> [川溪河], Huatou County [华头镇], Jiajiang County [夹江县], Leshan City [乐山市], Sichuan Province, China, 29°44'02"N, 103°23'58"E, leg. Shuai Zhang and Wang Song, August 12, 2024 .</p><p>Non-types.</p><p>• SAFS 230001, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.1275&amp;materialsCitation.latitude=30.96028" title="Search Plazi for locations around (long 104.1275/lat 30.96028)">Mengyang River</a> [濛阳河], Mengyang Town [濛阳镇], Pengzhou City [彭州市], Chengdu City [成都市], Sichuan Province, China, 30°57'37"N, 104°07'39"E, leg. Shuai Zhang, November 3, 2023 ; • SAFS 230002 –03, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.09056&amp;materialsCitation.latitude=30.955833" title="Search Plazi for locations around (long 104.09056/lat 30.955833)">Baituhe River</a> [百土河], Pengzhou City [彭州市], Chengdu City [成都市], Sichuan Province, China, 30°57'21"N, 104°05'26"E, leg. Shuai Zhang, July 30, 2023 ; • SAFS 230004 –05, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.399445&amp;materialsCitation.latitude=29.733889" title="Search Plazi for locations around (long 103.399445/lat 29.733889)">Chuanxihe River</a> [川溪河], Huatou Twon [华头镇], Jiajiang County [夹江县], Leshan City [乐山市], Sichuan Province, China, 29°44'02"N, 103°23'58"E leg. Shuai Zhang and Wang Song, August 12, 2024 ; • SAFS 230006, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.10944&amp;materialsCitation.latitude=30.070002" title="Search Plazi for locations around (long 103.10944/lat 30.070002)">Mingshanhe River</a> [名山河], Mingshan District [名山区], Yaan City [雅安市], Sichuan Province, China, 30°04'12"N, 103°06'34"E, leg. Shuai Zhang, August 25, 2023 ; • SAFS 230007, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.564445&amp;materialsCitation.latitude=30.644722" title="Search Plazi for locations around (long 103.564445/lat 30.644722)">Aihe River</a> [矮河], Dayi County [大邑县], Chengdu City [成都市], Sichuan Province, China, 30°38'41"N, 103°33'52"E, leg. Shuai Zhang, August 12, 2024 .</p><p>Diagnosis.</p><p>Rhinogobius mengyangensis sp. nov. can be distinguished from all congeners except R. szechuanensis by the following combination of features: absence of sensory canals and sensory pores on head; cheeks and operculum without spots or stripes (Fig. 3). It can be distinguished from R. szechuanensis in having the second dorsal fin with 9–11 longitudinal rows of inverted V-shaped or dash-like brown markings (vs with blue spots, some coalescing into vertical bars), incomplete brownish edges on flank scales below second dorsal fin (vs with complete edges), and a bright-yellow branchiostegal membrane (vs white or blue) (Fig. 4).</p><p>Description.</p><p>Morphometric measurements and meristic counts are provided in Table 2. see Figs 2, 3, and 5 for lateral body.</p><p>Fins and Vertebrae. First dorsal fin VI; 3 rd and 4 th rays longest, serrate during male breeding period. Second dorsal fin rays I / 8 – I / 10 (mostly I / 9). Anal fin rays I / 7 – I / 8 (Table 2); origin below 2 nd – 3 rd branched ray of second dorsal fin (Table 2). Pectoral fin rays 16–21 (Table 2). Pelvic fin rays I / 5, elliptical. Total vertebrae 27. Scales. Body covered with moderately large ctenoid scales; anterior trunk scales reduced. Almost whole head and pelvic base region naked. Longitudinal scale series counted 30–35 (Table 2). Transverse scale series 9–10 (Table 2). Sensory papillae. Sensory papillae illustrated in Figs 5 A and B. Row a obliquely uniserial, beneath orbit. Row d elongate, reaching vertical through posterior orbital margin. Rows a, c, and d converging at eye – upper jaw junction. Rows e and i with paired papillae. Row x 1 postorbital supracheek. Opercular papillae ot, oi, and os present. Sensory papillae well developed. Colouration in fresh. Colouration shown in Fig. 3. Head and body yellowish brown, with irregular dark-brown spots. Branchiostegal membrane bright yellow. Base of lateral scales dark, forming a reticular pattern on body. Belly pale yellow. Males darker than females. Wide blackish stripe from eye to lower lip, faint in females. First dorsal fin transparent; spinous rays dark brown; distal area yellow; males with 3–4 black marks on anterior membranes, 1–2 longitudinal rows of brown spots; females with 4–5 longitudinal rows of brown spots. Second dorsal fin transparent, with 9–11 longitudinal rows of inverted V-shaped or dash-like brown markings; membrane edge yellow. Anal fin greyish yellow, with a narrow white margin. Caudal fin yellow, with 6–7 vertical rows of brown spots. Pectoral fin membrane light yellow. Pelvic fin yellow.</p><p>Etymology.</p><p>The species is named after its type locality, the Mengyang Town.</p><p>Vernacular name.</p><p>濛阳吻虾虎鱼 (méng yáng wěn xiā hǔ yú).</p><p>Distribution and habitat.</p><p>The new species is currently reported from the Tuojiang River and the Minjiang River, two tributaries of the Changjiang River (Fig. 6). It occurs in pebble-bottomed sections of cold, flowing rivers; in sympatry with Acheilognathus mengyangensis Chen, Gong &amp; Guo, 2021, Gobiocypris rarus Ye &amp; Fu, 1983, Yunnanilus jiuchiensis Du, Hou, Chen &amp; Yang, 2018, Opsariichthys chengtui Kimura, 1934, and Belligobio pengxianensis Lo, Yao &amp; Chen, 1977 . In the Minjiang River basin, the new species occasionally occurs in sympatry with R. szechuanensis, but no R. szechuanensis has been recorded from the Tuojiang River basin.</p></div>	https://treatment.plazi.org/id/E81ECBBCBBB85648B8A4BC629D466CF0	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Liu, Xin;Chen, Zhong-Guang;Shu, Yi-Fan;Huang, Jun-Hao;Liu, Kai;Yu, Yi	Liu, Xin, Chen, Zhong-Guang, Shu, Yi-Fan, Huang, Jun-Hao, Liu, Kai, Yu, Yi (2026): Rhinogobius mengyangensis: a new species of freshwater goby (Teleostei, Gobiidae) from Sichuan Province, southwestern China. ZooKeys 1280: 333-347, DOI: 10.3897/zookeys.1280.188225
