Reference: Kottelat, Maurice, H. H. Tan (2011) Systomus xouthos, a new cyprinid fish from Borneo, and revalidation of Puntius pulcher (Teleostei: Cyprinidae). Ichthylogical Exploration of Freshwaters, 22(3): 209-214.
Abstract: Systomus xouthos, new species, is described from Belait and Tutong drainages in Brunei. It is distinguished by the adults having a plain brown body with a blackish reticulate pattern; the juveniles with a faint black spot at dorsal-fin origin and a midlateral series of 3 or 4 black blotches on the flank; a black band across dorsal fin; 12 scale rows around the caudal peduncle; a deeply forked caudal fin with long pointed lobes; and the dorsal and anal fins with a concave posterior margin. Systomus pulcher from eastern Borneo is revalidated from the synonym of S. tetrazona.
Reference: Kottelat, Maurice, H. H. Tan (2011) Rasbora atranus, a new species of fish from central Borneo (Teleostei: Cyprinidae). Ichthyological Exploration of Freshwaters, 22(3): 215-220.
Abstract: Rasbora atranus, new species, is described from the upper Mahakam drainage, central Borneo. It belongs to the R. sumatrana-elegans complex (sensu Brittan, 1954). It is distinguished by having a dark midlateral stripe from the opercle to the caudal-fin base, often faint or poorly constrasted, widened in a faint elongated triangular blotch at the end of the caudal peduncle; by the presence of a conspicuous oval to triangular black blotch along the anterior half of the anal-fin base; by the fins orange in life.
Reference: Conway, Kevin W., M. Kottelat, H. H. Tan (2011) Review of the Southeast Asian miniature cyprinid genus Sundadanio (Ostariophysi: Cyprinidae) with descriptions of seven new species from Indonesia and Malaysia. Ichthyological Exploration of Freshwaters, 22(3): 251-288.
Abstract: Sundadanio axelrodi is redescribed and seven new species are described: S. margarition from the Rajang and Sarawak drainages (Sarawak), S. echinus from the Anjungan peat swamp forest and S. rubellus from the Kapuas drainage (Kalimantan Barat, Borneo), S.retiarius from the Kotawaringin to Kahayan drainages (Kalimantan Tengah, Borneo), S. goblinus from the Batang Hari drainage (Sumatra), S. atomus from Singkep Island and S. gargula from Bangka Island. The eight species are distinguished by characters of colour pattern, turberculation and squamation.