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Opsariichthys bidens Günther, 1873

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Opsariichthys bidens
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Viet Nam country information

Common names: Cá Cháo
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in the central and northern Viet Nam. Present in Dakrong River (Ref. 89722) and Da River (Ref. 90167, 89724).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/vm.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Kottelat, M., 2001
National Database:

Common names from other countries

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: Opsariichthys: Greek, opsarion, -ou = a little portion fish + Greek, ichthys = fish (Ref. 45335).  More on author: Günther.

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

Freshwater; benthopelagic.   Temperate; 10°C - 20°C (Ref. 13614)

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

Asia: Laos, Viet Nam and East Asia.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 20.5 cm TL male/unsexed; (Ref. 111646); max. published weight: 58.40 g (Ref. 111347)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 10; Anal soft rays: 11 - 12; Vertebrae: 41 - 42. Adult male with projecting anal fin rays; conspicuous symphyseal knob in lower jaw; origin of dorsal fin slightly in front of anal origin; sexual dichromatism, female with plain body, male with irregular dark bars (Ref. 43281). Caudal peduncle scales modally 18; 19-21 pre-dorsal scales; 9 scales above lateral line; and 3 scales below the lateral line (Ref. 95038).

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator | Collaborators

Kottelat, M., 2001. Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281)

IUCN Red List Status (Ref. 123251)

  Least Concern (LC) ; Date assessed: 06 October 2011

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes(genus, species) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5002   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00730 - 0.01039), b=3.09 (3.04 - 3.14), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  3.2   ±0.4 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.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (11 of 100) .