Cottus cognatus, Slimy sculpin : fisheries, aquarium

Cottus cognatus Richardson, 1836

Slimy sculpin
Envoyez vos Photos et vidéos
Images | Images Google
Image of Cottus cognatus (Slimy sculpin)
Cottus cognatus
Photo de Scarola, J.F.

Classification / Noms Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Cottoidei (Sculpins) > Cottidae (Sculpins)
Etymology: Cottus: Greek, kottos = a fish (Ref. 45335)cognatus: cognatus due to its relation to the European species C. gobio (Ref. 1998).
More on author: Richardson.

Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie

; eau douce; saumâtre démersal; non migrateur (Ref. 126106); profondeur 6 - 128 m (Ref. 1998). Temperate; 4°C - 16°C (Ref. 13614); 71°N - 37°N

Distribution Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri

North America: throughout most of mainland Canada and Alaska; Atlantic Slope drainages south to Potomac River in Virginia, USA; St. Lawrence-Great Lakes basin; upper Mississippi River basin in Wisconsin, Minnesota and Iowa, USA; upper Columbia River drainage in Canada and USA. Also in Siberia, Russia.

Longueur à la première maturité / Taille / Poids / Âge

Maturité: Lm 7.4  range ? - ? cm
Max length : 12.1 cm TL mâle / non sexé; (Ref. 27547); common length : 7.5 cm TL mâle / non sexé; (Ref. 27547); âge max. reporté: 7 années (Ref. 28921)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 7 - 10; Rayons mous dorsaux (Total) : 14 - 19; Épines anales: 0; Rayons mous anaux: 10 - 14; Vertèbres: 31 - 35. Distinguished by the two pores on the chin and the short lateral line ending under the second dorsal fin (Ref. 27547). Gill rakers short and stubby, about 6 on first gill arch; lateral line incomplete, ending under middle of soft dorsal fin and usually having a few isolated pores behind this point; main portion with 12 to 26 pores (Ref. 27547). Pectorals large and fan-shaped, tips of lower rays projecting; fourth ray of pelvic much reduced; caudal rounded (Ref. 27547). Rather dark brown or green to dark gray on back and sides, whitish below, with vague, dark mottlings or bars below soft dorsal; belly sometimes with orange tints; soft dorsal, pectoral and caudal fins usually barred, pelvic fins and anal usually immaculate but sometimes barred; spiny dorsal dark at base, with a clear margin that may turn orange in breeding males; breeding males usually dark, sometimes black, all over (Ref. 27547).
Body shape (shape guide): elongated.

Biologie     Glossaire (ex. epibenthic)

Adults inhabit rocky riffles of cold streams, rocky areas of lakes (commonly at 90-106 m depth), springs and their effluents (Ref. 5723). They move into shallow water to spawn (Ref. 27547). In some areas, they are common in brackish water (Ref. 27843), presumably moving to and from fresh water, at least for spawning (Ref. 27547). They feed mostly on aquatic insect larvae and nymphs but also on crustaceans, small fishes, and plant materials (Ref. 1998). May be used as bait, but this seems rare (Ref. 27547).

Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

The male chooses a nesting site under a rock or ledge. Spawning males are territorial toward other males (Ref. 27547). He attracts a female into the nesting site and after more courting the female deposits her adhesive eggs. The female is then driven out and the male guards the eggs until hatching occurs. The nest usually contains eggs from several females (Ref. 27547). The male has also been observed to guard the young (Ref. 1998).

Référence principale Téléchargez vos références | Références | Coordinateur | Collaborateurs

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))

  Préoccupation mineure (LC) ; Date assessed: 24 June 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial; Aquarium: Aquariums publics
FAO - Publication: search | FishSource |

Plus d'informations

Écologie trophique
Aliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Rations alimentaires
Prédateurs
Écologie
Écologie
Dynamique des populations
Paramètres de croissance
Âges / tailles maximales
Longueur-poids rel.
Rel. longueur-longueur.
Fréquences de longueurs
Conversion de masse
Recrutement
Abondance
Cycle de vie
Reproduction
Maturité
Maturité/épines rel.
Fécondité
Frai
Agrégats de frai
Œufs
Développement de l'œuf
Larves
Dynamique des populations larvaires
Distribution
Territoires
Zones FAO
Écosystèmes
Occurrences
Introductions
BRUVS - Vidéos
Anatomie
Surface branchiale
Cerveau
Otolithe
Physiologie
Composition corporelle
Nutriments
Consommation d'oxygène
Type de natation
Vitesse de nage
Pigments visuels
Son de poisson
Maladies et parasites
Toxicité (CL50)
Génétique
génôme
Génétique
Hétérozygotie
Héritabilité
Diversité génétique
Liées à l'homme
Systèmes d'aquaculture
Profils d'aquaculture
Souches
Cas de ciguatera
Timbres, pièces de monnaie, divers
Sensibilisation
Collaborateurs
Références
Références

Outils

Articles particuliers

Télécharger en XML

Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | Aquariums publics | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimations basées sur des modèles

Indice de diversité phylogénétique (Réf. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00345 - 0.02005), b=3.16 (2.98 - 3.34), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Niveau trophique (Réf. 69278):  3.4   ±0.47 se; based on food items.
Generation time: 8.1 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Résilience (Réf. 120179):  Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (tm=2-4; tmax=7; Fec=42-1,420).
Vulnérabilité de la pêche (Ref. 59153):  Moderate to high vulnerability (50 of 100). 🛈