Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce benthopélagique; 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.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 41.0 cm TL mâle / non sexé; (Ref. 5723); common length : 19.1 cm TL mâle / non sexé; (Ref. 12193); poids max. publié: 2.2 kg (Ref. 4699); âge max. reporté: 10 années (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).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Potential pest
Utilisations par l'homme
Pêcheries: intérêt commercial mineur; Aquaculture: commercial; pêche sportive: oui; Aquarium: Commercial
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 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). |
Niveau trophique (Réf. 69278) |
3.2 ±0.2 se; based on diet studies. |
Résilience (Réf. 120179) |
Faible, temps minimum de doublement de population : 4,5 à 14 années (K=0.19-0.3; tmax=11). |
Vulnérabilité de la pêche (Ref. 59153) |
Low to moderate vulnerability (33 of 100). 🛈 |
Catégorie de prix (Ref. 80766) |
Unknown.
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Nutriments (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); |