Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
; süßwasser 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.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 41.0 cm TL Männchen/unbestimmt; (Ref. 5723); common length : 19.1 cm TL Männchen/unbestimmt; (Ref. 12193); max. veröff. Gewicht: 2.2 kg (Ref. 4699); max. veröff. Alter: 10 Jahre (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).
Body shape (shape guide): short and / or deep.
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).
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
Males guard the eggs for about 7 days (Ref. 93240). Also Ref. 101194.
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)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Potential pest
Nutzung durch Menschen
Fischereien: weniger kommerziell; Aquakultur: kommerziell; Sportfisch: ja; Aquarium: Kommerziell
Tools
Zusatzinformationen
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Internet Quellen
Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref. 82804) |
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01380 (0.01183 - 0.01611), b=3.13 (3.09 - 3.17), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Trophische Ebene (Ref. 69278) |
3.2 ±0.2 se; based on diet studies. |
Widerstandsfähigkeit (Ref. 120179) |
niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (K=0.19-0.3; tmax=11). |
Anfälligkeit der Fischerei (Ref. 59153) |
Low to moderate vulnerability (33 of 100). 🛈 |
Preiskategorie (Ref. 80766) |
Unknown.
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Nährstoffe (Ref. 124155) |
Calcium = 53.9 [28.4, 111.3] mg/100g; Iron = 1.02 [0.62, 1.78] mg/100g; Protein = 18.4 [16.4, 20.4] %; Omega3 = 0.397 [0.164, 1.023] g/100g; Selenium = 26 [10, 63] μg/100g; VitaminA = 20.6 [6.4, 59.4] μg/100g; Zinc = 1.06 [0.71, 1.62] mg/100g (wet weight); |