songamensis, Nahangbagrus Nguyen [V. H.] & Vo [V. B.] in Nguyen 2006:551, Fig. 4 [Freshwater fishes of Vietnam v. 2; ref. 29730] Mo Tôm, Thanh Tuong, Nà Hang, Tuyen Quang, Vietnam, 22°20'N, 105°20'E. Holotype: RIA1 uncat. [lost]. Paratypes: RIA1 (5, lost). •Valid as Nahangbagrus songamensis Nguyen & Vo 2006 -- (Kottelat 2013:217 [ref. 32989]). •Valid as Xiurenbagrus songamensis (Nguyen & Vo 2006) -- (Endruweit 2025:180 [ref. 42401]). Current status: Valid as Xiurenbagrus songamensis (Nguyen & Vo 2006). Amblycipitidae. Distribution: Southeast Asia: Gam River drainage, Nà Hang district, Tuyen Quang Province, Vietnam. Habitat: freshwater.