Carassius praecipuus

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Carassius praecipuus Kottelat, 2017

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drawing shows typical species in Cyprinidae.

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > Cyprininae
Etymology: Carassius: Latinization of , karass, karausche, European crucian carp (Ref. 45335);  praecipuus: Derived from the Latin adjective praecipuus, -a, -um, means ‘which is not common’, in allusion to the unexpected presence of a Carassius in the Mekong drainage and the very low dorsal-fi n ray, lateral line scale and gill-raker counts..

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

; zoet water benthopelagisch. Tropical

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Asia: upper Nam Chat in central Laos.

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 6.2 cm SL mannelijk / geslacht onbekend; (Ref. 116770)

Korte beschrijving Morfologie | Morfometrie

Dorsale zachte stralen (totaal): 13-15; Anale zachte stralen: 8. Carassius praecipuus is diagnosed from all other species of Carassius by having the origin of the anal fin located behind a vertical through the base of last dorsal-fin ray (vs. under dorsal-fi n base), 9-11½ branched dorsal-fin rays (vs. 11-21½), 25-27 +1 scales on lateral line (vs. 27-36 [total]), and 20-21 total gill rakers (vs. 23-128) (Ref. 116770).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Inhabits stream with 2-4 m width, about 30-50 cm depth, up to about 1 m depth in one of the curves, moderate current, and bottom consisted of gravel and pebble, with some areas cogvered by a thin layer of sediments. Occurs mainly in the deepest areas, under the roots of overhanging trees and bushes. Other fish species found were Opsarius pulchellus (Cyprinidae), Schistura coruscans, S. defectiva, S. personata, S. quaesita (Nemacheilidae), Oreoglanis sp. (Sisoridae) and Rhinogobius mekongianus (Gobiidae). Sexual maturity is attained at around 60-70 mm SL (Ref. 116770).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

Kottelat, M., 2017. Carassius praecipuus, a dwarf new species of goldfish from the Mekong drainage in central Laos (Teleostei: Cyprinidae). Revue suisse de Zoologie 124(2):323-329. (Ref. 116770)

Status op de Rode Lijst van het IUCN (Ref. 130435)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

FAO - Publication: search | FishSource |

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00548 - 0.02519), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  2.9   ±0.2 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).