Hemibagrus semotus Ng & Kottelat, 2013

Family:  Bagridae (Bagrid catfishes)
Max. size:  19.88 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: Padas River drainage and the shorter coastal rivers draining the western face of the Crocker Range in northern Borneo, Sabah, Malaysia.
Diagnosis:  Dorsal spines (total): 2-2; Dorsal soft rays (total): 7-7; Anal soft rays: 12-13; Vertebrae: 43-44. Differs from Hemibagrus baramensis in having a greater dorsal to adipose distance (8.2-10.2% SL vs. 4.7-8.6), an anal fi n with a straight distal margin, imparting a more rhomboidal appearance (vs. with a convex distal margin, imparting a more rounded appearance) and the upper lobe of the caudal fin regularly tapering (vs. rounded posteriorly); from H. sabanus in having a smaller adipose fin located further away from the dorsal fin (length of adipose-fin base 19.3-3.5% SL vs. 8.9-34.3; dorsal to adipose distance 8.2-10.6% SL vs. 1.2-4.4), a deeper caudal peduncle (depth 9.6-11.3% SL vs. 7.2-9.4), and a shorter outer mandibular barbel (81.9-120.1% HL vs. 127.5-162.1) (Ref. 93057).
Biology:  Inhabits slow-flowing streams with turbid water and a substrate of mud and gravel at elevation. Feeds mainly on arthropods (Ref. 93057).
IUCN Red List Status: Data deficient (DD); Date assessed: 01 September 2018 Ref. (130435)
Threat to humans:  harmless


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