Pseudobagarius alfredi (Ng & Kottelat, 1998)
Pseudobagarius alfredi
photo by Ng, H.H.

Family:  Akysidae (Stream catfishes), subfamily: Akysinae
Max. size:  3 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Tasek Bera in Malaysia.
Diagnosis:  Dorsal soft rays (total): 5-6; Anal soft rays: 8-10; Vertebrae: 32-33. Distinguished from all its congeners by possessing tubercles with poorly-demarcated, indistinct margins (versus tubercles with well-demarcated and distinct margins) and the following combination of characters: head width 20.3-25.0% SL; body depth at anus 11.3-14.7% SL; depth of caudal peduncle 5.7-7.3% SL; pectoral-fin length 23.1-28.9% SL; interorbital distance 34-39% HL; eye diameter 7-11% HL; length of nasal barbel 29-65% HL; length of maxillary barbel 122-144% HL; length of outer mandibular barbel 88-134% HL; color pattern of dark-colored patches on a predominantly light-colored body (versus predominantly dark-colored body with light-colored patches in its congeners); and caudal fin strongly forked (Ref. 30226).
Biology:  Recorded from small slow-flowing forested streams with acidic water (Ref. 84801).
IUCN Red List Status: Data deficient (DD); Date assessed: 01 September 2018 Ref. (126983)
Threat to humans:  harmless

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