Common names from other countries
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water benthopelagisch; pH range: 7.0 - 7.5; dH range: 10 - 15. Subtropical; 1°C - 36°C (Ref. 35682); 50°N - 25°N
North America: St. Lawrence - Great Lakes and Mississippi river basin; from Quebec to northern Mexico. Widely introduced. Several countries report adverse ecological impact after introduction.
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 41.0 cm TL mannelijk / geslacht onbekend; (Ref. 5723); common length : 19.1 cm TL mannelijk / geslacht onbekend; (Ref. 12193); max. gepubliceerd gewicht: 2.2 kg (Ref. 4699); max. gerapporteerde leeftijd: 10 Jaren (Ref. 72462)
A dark blue or black "ear" on an extension of the gill cover called the opercular flap; a prominent dark blotch at the base of the dorsal fin, close to the tail; typically olive-green backs, with a blue or purplish sheen along the sides; faint vertical bars may be present along the sides; breeding males may have more blue and orange coloration on their flanks (Ref. 44091).
Adults are found frequently in lakes, ponds, reservoirs and sluggish streams (Ref. 5723, 10294); occur primarily in reservoirs in Hawaii; preferably live in deep weed beds (Ref. 5723). Active mainly during dusk and dawn. They feed upon snails, small crayfish, insects, worms and small minnows (Ref. 5723). Young feed on crustaceans, insects and worms (Ref. 5723, 10294).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Males guard the eggs for about 7 days (Ref. 93240).
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
CITES (Ref. 131153)
Not Evaluated
Gevaar voor de mens
Potential pest
Gebruik door de mens
Visserij: van minder commercieel belang; Aquacultuur: commercieel; sportvis: ja; Aquarium: Commercieel
Tools
Speciale rapporten
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01380 (0.01182 - 0.01611), b=3.13 (3.09 - 3.17), in cm Total Length, based on LWR estimates for this species (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.2 se; based on diet studies.
Weerstandsvermogen (Ref.
120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.19-0.23; tmax=11).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (33 of 100).