Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Sisoridae (Sisorid catfishes) > Sisorinae
Etymology: Bagarius: From the local name Vaghari, in Calcuta (Ref. 45335); protos: Name 'protos' from the Greek word meaning original (at first), in reference to the species being in the most primitive position in the phylogenetic tree of genus Bagarius.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Subtropical
Asia: China, Myanmar, and Thailand.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 40.3 cm SL male/unsexed; (Ref. 137734)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 6; Anal soft rays: 8 - 9; Vertebrae: 43. This species is distinguished from its congeners by the following set of characters: eye small (5-8% HL); lateral margin of frontal straight, not forming brow ridge, strongly notched in antero-dorsal margin of the first dorsal-fin pterygiophore; dorsal spine strong (width 10.6-14.4 times its length); filamentous extensions of pectoral-fin spine reaching posterior of anal-fin base; neural spines of 4th-6th vertebrae immediately anterior to adipose fin distally slender; adipose-fin origin at vertical through or very slightly posterior to anal-fin origin, and caudal peduncle deep (4.2-5.1% SL) (Ref. 137734).
Body shape (shape guide): elongated; Cross section: oval.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Zeng, Y.-Y., X.-R. Pu, H.-T. Lei, T.N. Oo and X.-Y. Chen, 2025. A taxonomic review of Bagarius catfish (Siluriformes, Sisoridae) in the Salween and Irrawaddy rivers, with descriptions of two new species from China and Myanmar. Zoosyst. Evol. 101(3):1123-1136. (Ref. 137734)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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