Macrognathus tapirus Kottelat & Widjanarti 2005

Macrognathus aculeatus: Herre & Myers 1937: 74 (Bukit Merah reservoir).

Macrognathus tapirus: Authors’ data (Pondok Tanjung).

Remarks. Macrognathus aculeatus was previously considered widespread until Britz (2010) demonstrated it can be distinguished into 12 species. Specimens encountered in Thailand, Peninsular Malaysia, Sumatra and Borneo are to be referred as M. tapirus (Kottelat & Widjanarti, 2005) . Only specimens encountered in Java are to be identified as M. aculeatus .