Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Siluriformes (Catfishes) > Akysidae (Stream catfishes) > Akysinae
Etymology: alfredi: Named for Eric R. Alfred, for his pioneering work on the freshwater fish fauna of Peninsular Malaysia.
Eponymy: Eric Ronald Alfred (1931–2019) was an ichthyologist and Curator of the Raffles Museum, Singapore (1957–1967). [...] (Ref. 128868), visit book page.
More on authors: Ng & Kottelat.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: Tasek Bera in Malaysia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.0 cm SL male/unsexed; (Ref. 30226)

Short description Identification keys | Morphology | Morphometrics

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).

Recorded from small slow-flowing forested streams with acidic water (Ref. 84801).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628. (Ref. 58032)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Data deficient (DD) ; Date assessed: 01 September 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO -

Pseudobagarius alfredi (Ng & Kottelat, 1998)