Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > No subfamily
Etymology: polylepis: From the Greek poly (meaning many, numerous) and lepis (meaning scale), alluding to the higher number of lateral line scales (34-35) compared to other species of Tor (23-28).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Subtropical
Asia: Lancangjiang basin [Mekong basin) in Yunnan Province, China.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.3 cm SL male/unsexed; (Ref. 13848)
Morphology | Morphometrics
soft rays: 5. Distinguishable from other species of the genus by the combination of the following characters: color pattern consisting of a blackish longitudinal stripe along side of body; more lateral line scales (34-35) and predorsal scales (14); median lobe of lower lip with a truncate posterior margin, not extending to a line connecting inner corners of mouth; eye diameter smaller (13.1-13.8% of HL, vs. 14.6-31.2%) and visible in ventral view; interorbital width wider (43.8-45.7% of HL, vs. 27.8-40.0%); isthmus naked, scales embedded in skin; gill rakers 19-22 (Ref 13848).
Found in streams with clear water and usually with slow current.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Zhou, W. and G.H. Cui, 1996. A review of Tor species from the Lancangjiang River (Upper Mekong River), China (Teleostei: Cyprinidae). Ichthyol. Explor. Freshwat. 7(2):131-142. (Ref. 13848)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00631 (0.00304 - 0.01311), b=3.09 (2.92 - 3.26), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.9 ±0.2 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (12 of 100) .