Actinopteri (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > Acrossocheilinae
Etymology: Onychostoma: Greek, onyx, -ychos = nail + Greek, stoma = mouth (Ref. 45335).
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; brackish; benthopelagic. Tropical
Asia: Laos, Viet Nam, China.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 23.8 cm SL male/unsexed; (Ref. 82789); common length : 12.5 cm SL male/unsexed; (Ref. 35840)
Morphology | Morphometrics
Body golden yellowish with a dark mid-lateral stripe, broader and most conspicuous above pectoral; sometimes a few thinner stripes below mid-lateral stripe; large adults with a transverse row of 4-6 large tubercles on tip of snout; wide mouth, width about 1.5 times in maximum head width; barbels absent in adults; last simple dorsal ray slender, and finely serrated posteriorly in large adults; caudal peduncle 2.0-2.8 times longer than deep (Ref. 43281).
Adults inhabit streams with swift and clear waters (Ref. 43281).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kottelat, M., 2013. The fishes of the inland waters of Southeast Asia: a catalogue and core bibliography of the fishes known to occur in freshwaters, mangroves and estuaries. The Raffles Bulletin of Zoology 2013 (Suppl. 27):1-663. (Ref. 94476)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.7 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (19 of 100).