taxonID	type	description	language	source
42EFEDDE8A455E0FA8C1ADE636009C32.taxon	description	Figs 2, 3, 4, 5, Tables 1, 2	en	Harefa, Tonisman, Haryono, Haryono, Gustiano, Rudhy, Sukmono, Tedjo, Wahyudewantoro, Gema (2025): Desmopuntius mahakamensis, a new cyprinid species (Teleostei, Cyprinidae) from East Kalimantan, Indonesia. ZooKeys 1256: 371-391, DOI: 10.3897/zookeys.1256.158411
42EFEDDE8A455E0FA8C1ADE636009C32.taxon	diagnosis	Diagnosis. Desmopuntius mahakamensis can be distinguished from all congeners by the following combination of characters: anal-fin rays 5 ½; lateral line scales 26 – 27 (mode 26); predorsal scales 9 – 11 (mode 10); gill rakers 9 – 11 (mode 10); total vertebrae 29; axial streak present; 5 – 6 black lateral stripes in adults (> 30 mm SL), with stripe + 1 extending from behind the gill opening along scale row 1, reaching only to the midbody, between the origin and end of the dorsal-fin base.	en	Harefa, Tonisman, Haryono, Haryono, Gustiano, Rudhy, Sukmono, Tedjo, Wahyudewantoro, Gema (2025): Desmopuntius mahakamensis, a new cyprinid species (Teleostei, Cyprinidae) from East Kalimantan, Indonesia. ZooKeys 1256: 371-391, DOI: 10.3897/zookeys.1256.158411
42EFEDDE8A455E0FA8C1ADE636009C32.taxon	description	Description. Morphometric and meristic data are presented in Tables 1, 3. Body laterally compressed and relatively deep, with greatest depth at dorsal-fin origin. Dorsal profile continuous from head to body, with a slight hump at the nape, ascending to dorsal-fin origin, then descending to the anterior base of the caudal fin. Ventral profile continues from head to body, slightly convex through the posterior end of the anal-fin base, and then slightly concave along the caudal peduncle. Rostral and maxillary barbels present. Snout blunt. Eyes large, almost aligned with the dorsal profile of the head. Mouth subterminal; maxilla extending to, or slightly beyond, the vertical of the anterior margin of the eye. Postlabial groove deep and interrupted medially. Lateral line complete, posteriorly descending for about six scales. Dorsal fin with 4 unbranched and 8 ½ branched rays; origin at about midbody, distal margin straight or slightly concave; last unbranched ray posteriorly serrated with 12 – 18 serrations. Anal fin with 3 unbranched and 5 ½ branched rays. Pectoral-fin rays with 1 unbranched and 14 * – 15 (modally 14) branched rays; fin rounded, first and second branched rays longest, not reaching pelvic-fin origin. Pelvic-fin with 1 unbranched and 9 branched rays; origin vertically behind dorsal-fin origin; unbranched ray longest, reaching only to anus. Caudal fin forked, lobes rounded to pointed at tips. Lateral-line scales 25 + 2, 26 + 2 * (mode 26 + 2), transverse scales ½ 4 / 1 / 3 ½ from dorsal-fin origin to about two scales anterior to pelvic-fin ray; predorsal scales 9 – 11 (mode 10 *); circumpeduncular scales 12. Gill rakers 9 – 11. Total vertebrae 29. Colouration. Fresh specimens (Adult; Fig. 4). Dorsal side of the head dark brown, mid-lateral and ventral sides of the head greyish white. Small brown spots present below the eyes. Body with greyish-brown background, bearing 5 – 6 black lateral stripes: stripe 0 extending from just behind the gill opening, between scale row 0 and - 1, to the middle of the caudal-fin base posteriorly; stripe + 1 extending from behind the upper gill opening, along scale row + 1, continuing only to midbody, between the origin and end of the dorsal-fin base; stripe + 2 extending from the 5 th – 7 th of scale of row + 2 to the upper caudal-fin base; stripe + 3 extending from the nape along scale row + 3 to slightly behind the end of the dorsal-fin base; stripe - 1 extending from behind the gill opening, between scale rows - 1 and - 2, to the lower caudal-fin base; stripe - 2, extending from behind the pectoral fin along scale row - 3 to the anal-fin base, gradually decreasing in intesity anteriorly. Unbranched dorsal-fin rays dark brown, fin membrane yellowish-orange, fading posteriorly. Anal, pectoral, and pelvic fin membranes translucent. Caudal fin yellowish, becoming translucent posteriorly. Preserved specimens (Adult; Fig. 2). Head with dark yellowish background, slightly darker dorsally, and pale yellowish ventrally. Body ground colour dark yellowish, becoming darker dorsally and pale yellowish ventrally, extending to below the dorsal fin, and in some specimens reaching just behind the gill opening anteriorly. Body with 5 – 6 black lateral stripes, in positions similar to those of live specimens. Axial streak present, posteriorly overlapping lateral stripe + 1, extending anteriorly to below dorsal fin. All fins pale. Juveniles (Fig. 3). Head and body with dark yellowish background. In specimens <30 mm SL, body with three interrupted lateral stripes and 4 – 5 vertical dark bars or spot on the dorsal side: 1 st bar accros the eye; 2 nd bar extending behind the gill opening; 3 rd bar below the first and second branched ray of the dorsal fin, sometimes continuing to the pelvic fin; 4 th bar or spot at the end the of dorsal-fin base; 5 th bar or spot at the caudal penducle. In specimens> 30 mm SL, vertical bars usually faded, and lateral stripes form a more continuous pattern, except for stripe + 1, which extends only to midbody.	en	Harefa, Tonisman, Haryono, Haryono, Gustiano, Rudhy, Sukmono, Tedjo, Wahyudewantoro, Gema (2025): Desmopuntius mahakamensis, a new cyprinid species (Teleostei, Cyprinidae) from East Kalimantan, Indonesia. ZooKeys 1256: 371-391, DOI: 10.3897/zookeys.1256.158411
42EFEDDE8A455E0FA8C1ADE636009C32.taxon	distribution	Distribution. The new species is currently known only from the Mahakam River drainage, East Kalimantan, Indonesia. Most specimens have been collected from two lakes (Wis and Jempang) and from several small streams within the Mahakam River’s tributary system (Fig. 1).	en	Harefa, Tonisman, Haryono, Haryono, Gustiano, Rudhy, Sukmono, Tedjo, Wahyudewantoro, Gema (2025): Desmopuntius mahakamensis, a new cyprinid species (Teleostei, Cyprinidae) from East Kalimantan, Indonesia. ZooKeys 1256: 371-391, DOI: 10.3897/zookeys.1256.158411
42EFEDDE8A455E0FA8C1ADE636009C32.taxon	etymology	Etymology. The specific name, mahakamensis, is derived from the Mahakam River, the locality where the species was collected.	en	Harefa, Tonisman, Haryono, Haryono, Gustiano, Rudhy, Sukmono, Tedjo, Wahyudewantoro, Gema (2025): Desmopuntius mahakamensis, a new cyprinid species (Teleostei, Cyprinidae) from East Kalimantan, Indonesia. ZooKeys 1256: 371-391, DOI: 10.3897/zookeys.1256.158411
