Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal. Temperate; 43°N - 35°N
North America: Sacramento-San Joaquin, Russian, Pajaro-Salinas and smaller coastal drainages in California, USA.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 11.0 cm TL mâle / non sexé; (Ref. 5723); common length : 8.3 cm TL mâle / non sexé; (Ref. 12193); âge max. reporté: 5 années (Ref. 72464)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Rayons mous dorsaux (Total) : 7 - 10. Mouth slightly subterminal; body deep, compressed, tapering to narrow caudal peduncle; dorsal-fin origin behind pelvic-fin origin; caudal fin large; scales on lateral line 47-63; dorsal fin with 7-10 rays; pharyngeal teeth 0,5-4,0; dusky gray to steel blue above; dark stripe along side; silver white below; and breeding individuals with red orange-chin, gill cover, and anal and paired-fin bases (Ref. 86798).
Body shape (shape guide): fusiform / normal.
Adults inhabit rocky pools of headwaters, creeks and small to medium rivers (Ref. 86798). Migratory behaviour is undetermined (Ref. 126106).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01148 (0.00455 - 0.02896), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
2.4 ±0.2 se; based on size and trophs of closest relatives |
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Generation time |
2.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Résilience (Réf. 120179) |
Haut, temps minimum de doublement de population inférieur à 15 mois (K=0.5). |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (24 of 100). 🛈 |