Clarias kapuasensis Sudarto, Teugels & Pouyaud 2003

Very short occipital process length (5.2-6.6% HL), a relatively long distance between the tip of the occipital process and the dorsal fin origin (6.4-8.7% SL), the anterior edge of the pectoral spine smooth and without serrae, and a relatively short anal fin compared to C. nieuhofii with 51-60 rays (Ref. 49847).

Dorsal spines (total): 0; Dorsal soft rays (total): 65 - 72; Analspines: 0; Analsoft rays: 51 - 60

Inhabits swampy areas bordering the mainstream of the Kapuas River and its tributaries (Ref. 49847).