Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk; pH range: 7.0 - ? ; dH range: 20 - ?. Temperate; 10°C - 24°C (Ref. 2059)
Asia: China, Korea, Japan and Amur River basin. At least one country reports adverse ecological impact after introduction.
Length at first maturity / Size / Vikt / Age
Maturity: Lm ?, range 20 - ? cm
Max length : 47.0 cm TL hane/ej könsbestämd; (Ref. 1441); 34.3 cm TL (female); common length : 26.0 cm TL hane/ej könsbestämd; (Ref. 56557); publicerad maxvikt: 1.7 kg (Ref. 56557)
Ryggkotor: 42 - 44. Both sides of the body with 7-11 large and blackish spots. Deep body with clearly convex dorsal profile. Head length shorter than body depth. Snout length shorter or equal to postorbital head length. Lips not developed, lateral lobes of lower lip narrow, without folds, the median process large and marked. Barbel length slightly thick, 1/2-2/3 of eye diameter. Dorsal spine strong, equal to HL. Origin of dorsal fin nearer the tip of snout than the caudal base (Ref. 38453). Anal fin with 6 1/2 branched anal rays; last simple dorsal ray ossified, spine-like (Ref. 43281).
Adults usually found in streams and creeks with moderate flow and sandy bottom (Ref. 43281). Feed mainly on insects and mollusks in summer and on crustaceans in winter (Ref. 1441)
Life cycle and mating behavior
Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver
Mature at 3 years of age. Spawns from May to June, with water temperatures from 19-25 C°. Eggs are pasted at underwater plants. Egg diameter about 2mm. Development time about 4 days. Larvae live pelagic for the first 6 days.
Kottelat, M., 2006. Fishes of Mongolia. A check-list of the fishes known to occur in Mongolia with comments on systematics and nomenclature. The World Bank, Washington, DC. 103 p. (Ref. 57778)
IUCN Red List Status (Ref. 130435)
Threat to humans
Potential pest (Ref. 43281)
Human uses
Fiskeri: kommersiell
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00660 - 0.00956), b=3.13 (3.08 - 3.18), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.5 ±0.47 se; based on food items.
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (tm=3).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (37 of 100).
