identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
C66C553BF0B852ED8C48CC3C46122287.text	C66C553BF0B852ED8C48CC3C46122287.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Acrossocheilus zhangjiajiensis Jiang, Cao, Deng & Wei 2026	<div><p>Acrossocheilus zhangjiajiensis Jiang, Cao, Deng &amp; Wei sp. nov.</p><p>Holotype.</p><p>JWS 2024296, 120.4 mm SL; China: Hunan Province, Zhangjiajie City, Sangzhi County, Bamaoxi; caught on 16 October 2024 by local people; specimen intact and undissected.</p><p>Paratypes.</p><p>JWS 2024293 –2024295 (3), 133.8–157.8 mm SL • JWS 2024297 –2024303 (7), 80.6–83.4 mm SL; all collected at the same type locality and same times as the holotype; tissues of the pectoral fin (right side) of some specimens were taken for DNA sequencing.</p><p>Diagnosis.</p><p>Acrossocheilus zhangjiajiensis sp. nov. can be distinguished from all species in the non-barred group by the presence of vertical black bars on the flanks, as opposed to the absence of such bars. It can also be differentiated from all species in the barred group by the following combination of characters: (1) The maxillary barbel extends to the level of the midline of the eye. (2) The last unbranched dorsal-fin ray is slightly hardened, with a smooth posterior margin. (3) The dorsal-fin membranes are marked with black stripes. (4) The second primary vertical bar (PVB 2) is located anterior to the origin of the dorsal fin. (5) Juveniles possess six distinct vertical black bars on the flank, which are retained throughout all life stages. (6) The number of lateral line scales is fewer than 40.</p><p>Description.</p><p>Biometric data are presented in Table 2. The body is elongated and laterally compressed, with a noticeable rise at the junction of the head and dorsal region, reaching its greatest depth at the origin of the dorsal fin (24.8 % – 30.0 % SL). The least body depth is at the caudal peduncle (10.7 % – 13.2 % SL), which is closer to the base of the caudal fin than to the posterior end of the anal-fin base. The ventral profile is rounded, with a slight concavity from the origin of the anal fin to the base of the caudal fin.</p><p>The head is moderately large, with its length exceeding the body depth. The snout is rounded and blunt, shorter than the postorbital head length. A rostral fold is present, overlying the upper lip. The mouth is inferior and horseshoe-shaped. The lips are relatively thick: the upper lip is fully adnate to the upper jaw, and the middle part of the lower lip is divided into two lateral lobes with a narrow interruption; the upper and lower lips are connected at the corners of the mouth. Two pairs of barbels are present: maxillary barbels are thick and long (25.1 % – 36.6 % HL), extending backward to the midpoint of the eye, while rostral barbels are relatively short (10.7 % – 17.0 % HL). The eyes are moderately large (18.2 % – 26.4 % HL), positioned above the midline of the lateral head. The interorbital space is convex, with a width greater than the orbital diameter.</p><p>The dorsal fin (21.8 % – 25.4 % SL) features a thickened and slightly hardened last unbranched ray, with an outer margin that is slightly concave between the 3 rd and 5 th branched rays; its origin is closer to the snout tip than to the caudal fin base. The pectoral fin (20.3 % – 23.9 % SL) does not extend to the origin of the pelvic fin. The pelvic fin is short (17.9 % – 22.0 % SL), with its origin vertically aligned with the posterior of the dorsal-fin base. The anal fin (16.6 % – 22.9 % SL) has a truncate outer margin. The caudal fin is forked, with the lower lobe slightly longer than the upper lobe. The body is covered with moderately sized cycloid scales; the lateral line is complete, with 37–38 lateral line scales.</p><p>Coloration.</p><p>In living specimens, the dorsum and lateral surfaces are light yellowish-brown, with the ventral side paler and tending toward milky white. From juvenile to sub-adult stages, there are six distinct vertical bars on the flanks, each spanning two or three scales, along with a longitudinal stripe visible along the lateral line. In adults, the vertical bars gradually become shorter and fainter but remain distinguishable, while the longitudinal stripe becomes more pronounced. The dorsal, pectoral, pelvic, and anal fins are semi-transparent, sometimes with fin rays edged in faint reddish hues; the caudal fin is pale yellow (Fig. 1). In specimens preserved in 10 % formalin, the dorsum appears grayish-black, and the venter is grayish-white; the vertical bars and longitudinal stripe become obscure, and all fins are nearly grayish-white, with black pigmentation in the interradial membranes (Fig. 2).</p><p>Distribution and habitat.</p><p>This new species was collected from the upper reaches of the northern branch of the Lishui River (Fig. 3), in Bamaoxi Village, Wudaoshui Township, Sangzhi County, Zhangjiajie City, Hunan Province, China. The water is shallow and clear, flowing gently over a gravel bottom. Both banks are densely covered with trees and shrubs, forming well-developed vegetation. The overall habitat exhibits an interdependent relationship between the forest and the river, maintaining a relatively intact ecosystem that provides favorable living conditions for aquatic animals.</p><p>Etymology.</p><p>The specific epithet zhangjiajiensis is derived from Zhangjiajie City, where the type locality of this species is located. Currently, this taxon is known only from this type locality, and its Chinese name is “ Zhāng jiā jiè guāng chún yú (张家界光唇鱼) ”.</p></div>	https://treatment.plazi.org/id/C66C553BF0B852ED8C48CC3C46122287	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	Cao, Jianhan;Deng, Zhiyong;Xiang, Hongmei;Xie, Yixing;Wang, Cheng;Li, Hong;Hu, Yang;Wei, Ying;Jiang, Wansheng	Cao, Jianhan, Deng, Zhiyong, Xiang, Hongmei, Xie, Yixing, Wang, Cheng, Li, Hong, Hu, Yang, Wei, Ying, Jiang, Wansheng (2026): Integrative taxonomy reveals a new species of Acrossocheilus (Cypriniformes, Cyprinidae) from Hunan Province, China. Zoosystematics and Evolution 102 (3): 869-883, DOI: 10.3897/zse.102.195486
