Teleostei (teleosts) >
Cypriniformes (Carps) >
Nemacheilidae (Brook loaches)
Etymology: Yunnanilus: From Yunnan, city on southwest China; pachycephalus: From pachy (Greek) which means thick, wide; and cephalus (Greek) which means head; alluding to the large swollen head of some specimens.
More on authors: Kottelat & Chu.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Subtropical
Asia: stream Weizhangho at Yangliu, Yunnan, China.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 8.3 cm SL male/unsexed; (Ref. 12040)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 12 - 13; Anal soft rays: 8. No lateral line; no head pores; 9 1/2 branched dorsal rays; 14 branched caudal rays; body depth 20-25% SL; dorsal head length 16-21% SL; color pattern usually consisting of large dark spots (Ref. 12040).
Body shape (shape guide): elongated.
Inhabits torrential waters under rocks.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kottelat, M. and X.L. Chu, 1988. Revision of Yunnanilus with description of a miniature species flock and six new species from China (Cypriniformes: Homalopteridae). Environ. Biol. Fishes 23(1-2):65-93. (Ref. 12040)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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