title: Clarias serniosus, a new walking catfish (Teleostei: Clariidae) from Laos.
abstract: Clarias serniosus, a new Southeast Asian walking-catfish species, is described from the Bolavens Plateau in southern Laos. The new species is a member of the C. batrachus species complex, and can be distinguished from congeners in the complex in having a combination of: occipital process length 15-17 % HL, head length 28.2-28.6% SL, head width 18.5-19.2% SL, head depth 13.0-13.7% SL, distance between the occipital process and the base of the first dorsal-fin ray 8.5% SL, smooth anterior edge of pectoral spine, 67 dorsal-fin rays, body depth at anus 16.2-16.5% SL, and 57 total vertebrae.
authors.affiliation: Lee Kong Chian Natural History Museum, National University of Singapore, 6 Science Drive 2 #03-01, Singapore 117546.; Email: heokhee.ng@gmail.com.
authors.forename: Heok Hee
authors.initials: HH
authors.lastname: Ng
authors.affiliation: Rue des Rauraques 6, 2800 Delémont, Switzerland.; Email: mkottelat@dplanet.ch.
authors.forename: Maurice
authors.initials: M
authors.lastname: Kottelat
mesh_terms: D063147:Animal Distribution; D000818:Animals; D002397:Catfishes / Q000033:anatomy & histology* / Q000145:classification* / Q000502:physiology; D007812:Laos; D045483:Rivers; D013045:Species Specificity