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Teleostei (teleosts) > Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > Acrossocheilinae
Etymology: Onychostoma: Greek, onyx, -ychos = nail + Greek, stoma = mouth (Ref. 45335).
Eponymy: Dr Johann Gerhard Heinrich Carl Gerlach (1843–1913) was a German physician who lived for part of his life in Hong Kong from where he sent a collection of fishes, including the holotype of this species, to Senckenbergischen Naturforschenden [...] (Ref. 128868), visit book page.
More on author: Peters.

Issue
Genus Eschmeyer, pers. comm.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: Reported from the Chao Phraya and Mekong basins (Ref. 26336) and Annam (Ref. 26580), Nam Ma basin, Red River and Nanpangjiang basins (Ref. 43281).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 31.6 cm SL male/unsexed; (Ref. 82789); common length : 16.5 cm SL male/unsexed; (Ref. 35840); max. published weight: 1.0 kg (Ref. 9671)

Short description Identification keys | Morphology | Morphometrics

With wide mouth, width about 1.5 times in maximum head width; adults without barbels; last simple dorsal ray strong and serrated posteriorly (in specimens over about 10 cm SL); caudal peduncle 1.7-2.7 times longer than deep (Ref. 43281).

Adults live in rapid current of mountain streams.

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

Main reference Upload your references | References | Coordinator | Collaborators

Huang, H. et al., 1987. The freshwater fishes of China in coloured illustrations. The freshwater fishes of China in coloured illustrations. (Ref. 9671)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Near Threatened (NT) ; Date assessed: 01 March 2007

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial

FAO - Publication: search | FishSource |

More information

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00977 (0.00558 - 0.01710), b=3.10 (2.95 - 3.25), in cm total length, based on LWR estimates for this species & (Sub)family-body (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 to moderate vulnerability (29 of 100).

Price category (Ref. 80766): Unknown.

Onychostoma gerlachi (Peters, 1881)