Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Cypriniformes
(Carps) > Xenocyprididae
(East Asian minnows)
Etymology: .parva: Named from the Latin word parva (gender feminine), meaning small or little, in reference to its small body size.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; depth range - m (Ref. ), usually - m (Ref. ). Subtropical; 0°C -
Asia: Cheng-jiang River, a tributary of Hongshui-He River of the Pearl River basin in Guangxi Province, China.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.8 cm SL male/unsexed; (Ref. 104754)
Morphology | Morphometrics
soft rays: 15 - 17. Metzia parva is distinguished from all other congeners by the following characters: smaller body size, 48.3-57.7 mm SL (vs. 58.3-151.4 mm SL); lateral line complete, but interrupted in some specimens along ventral margin above anal-fin; anal fin with 12-14 branched rays (vs. 10-11 or 15-20); pectoral fin with 10 branched rays (vs. 11-16); pelvic fin with 6 branched rays (vs. 7-9); longer caudal peduncle 17.8-21.7% SL (vs. 14.8-17.4% SL); shorter preanal length 60.9-66.0% SL (vs. 69.0-73.0% SL); and interorbital width distinctly larger 28.4-33.0% HL (vs. 20.2-24.7% HL) (Ref. 104754).
Females have a large number of eggs (Ref. 104754).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Luo, W., J.P. Sullivan, H.-T. Zhao and Z.-G. Peng, 2015. Metzia parva, a new cyprinid species (Teleostei: Cypriniformes) from south China. Zootaxa 3962(1):226-234. (Ref. 104754)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00412 - 0.01842), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .