laak, Glyptosternum Popta [C. M. L.] 1904:190 [Notes from the Leyden Museum v. 24 (no. 4) (art. 6) (for Oct. 1902); ref. 3547] Howong River, Borneo, Indonesia. Syntypes: RMNH 7562 (3). Type catalog: Ferraris 2007:395 [ref. 29155]. •Status uncertain, in Glyptothorax -- (Roberts 1989:134 [ref. 6439], Thomson & Page 2006:57 [ref. 28859]). •Species inquirenda in Glyptothorax -- (Ferraris 2007:395 [ref. 29155]). •Valid as Glyptothorax laak (Popta 1904) -- (Ng & Hadiaty 2008:143 [ref. 29735], Ng & Hadiaty 2009:67 [ref. 30166], Kottelat 2013:225 [ref. 32989]). •Synonym of Glyptothorax nieuwenhuisi (Vaillant 1902) -- (Ng & Kottelat 2016:45 [ref. 34878]). Current status: Synonym of Glyptothorax nieuwenhuisi (Vaillant 1902). Sisoridae: Sisorinae. Habitat: freshwater.