Clupisoma longianale

diagnosis

Diagnosis. Morphometric and meristic data are shown in Tables 1 and 2. Clupisoma longianale is distinguished from its congeners occurring in China by the following combination of characters: nasal barbel extending to or almost to dorsal-fin origin vertically (vs. extending only to pectoral-fin origin); maxillary barbel extending beyond middle of anal-fin base (vs. extending only to anal-fin origin); medial mental barbel extending to 1 / 3 – 1 / 2 of anal-fin base (vs. not extending beyond end of pectoral-fin); origin of pelvic fin located at middle of dorsal-fin base vertically (vs. located at end of dorsal-fin base vertically).

The species of Clupisoma from Yunnan, China (Teleostei: Siluriformes: Ailiidae), with a comment on the validity of the family Ailiidae

discussion

Remark. This species can be easily distinguished from its congeners by the possession of the longer nasal, maxillary, and medial mental barbels.

The species of Clupisoma from Yunnan, China (Teleostei: Siluriformes: Ailiidae), with a comment on the validity of the family Ailiidae

distribution

Distribution. Lower Lancang-jiang in Yunnan, China (upper Mekong River basin) (Fig. 2).

The species of Clupisoma from Yunnan, China (Teleostei: Siluriformes: Ailiidae), with a comment on the validity of the family Ailiidae

materials_examined

Material examined. Holotype: KIZ 735118, 138 mm SL; Yunnan: Pu-Er County: Tongxing Township, main stream of the Lancang-jiang. Paratype: KIZ 735125, 109.3 mm SL, collected with the holotype; KIZ 748127, 101.8 mm SL, Yunnan: Jinghong County: Menghan Township, main stream of the Lancang-jiang.

The species of Clupisoma from Yunnan, China (Teleostei: Siluriformes: Ailiidae), with a comment on the validity of the family Ailiidae