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Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Sisoridae (Sisorid catfishes) > Glyptosterninae
Etymology: Pseudexostoma: Greek, pseudes = false + Greek, exo = outside + Greek, stoma = mouth (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; demersal. Temperate, preferred ?

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Asia: known only from the middle and lower Nujiang (= Salween) basin, China.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 15.3 cm SL male/unsexed; (Ref. 57980)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 5; Anal soft rays: 3 - 4. This species is distinguished from Pseudexostoma yunnanensis by the following characters: posterior margin of lower lip with 3 notches, depth of middle one shallower than lateral ones (vs. same depth), length of 2 smaller median lobes of lower lip longer than lateral lobes (vs. the same length); pelvic fin i, 3-4 (vs. i, 5); base of adipose fin longer, 36.1-46.0% SL (vs. 28.8-39.8); caudal peduncle more slender, depth 4.2-6.9% SL, 20-33.7% in length of caudal peduncle (vs. 6.4-8.3 and 32.6-42.7); premaxillary tooth band with 16-18 teeth (vs. 18-22), it is divided into 2 and are isolated (vs. connected partially). The species differs from P. longipterus in having a shorter pectoral fin 24.9-29.8% SL (vs. 30.1-31.3), pelvic fin 16.1-22.9% SL (23.1-24.3), and caudal fin 13.6-17.9% SL (vs. 18-19.6); smaller eyes and a narrower interorbital width, eye diameter 5.8-7.8% HL (vs. 8.2-10), interorbital width 19.7-24.7% HL (vs. 25.5-30.8) (Ref. 57980).

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

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Zhou, W., Y. Yang, X. Li and M.-H. Li, 2007. Review of the catfish genus Pseudexostoma (Siluriformes: Sisoridae) with description of a new species from the Upper Salween (Nujiang) Basin of China. Raffles Bull. Zool. 55 (1):147-155. (Ref. 57980)

IUCN Red List Status (Ref. 115185)

Not Evaluated

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

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Internet sources

Pseudexostoma brachysoma Chu, 1979