Cottus bairdii, Mottled sculpin

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Cottus bairdii Girard, 1850

Mottled sculpin
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Cottus bairdii
Male picture by N. Burkhead & R. Jenkins, courtesy of VDGIF

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Perciformes/Cottoidei (Sculpins) > Cottidae (Sculpins)
Etymology: Cottus: Greek, kottos = a fish (Ref. 45335);  bairdii: Named after Spencer Fullerton Baird, first U.S. Fish Commissioner..
More on author: Girard.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; demersal; depth range ? - 16 m (Ref. 1998). Temperate; 59°N - 34°N

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

North America: widespread with highly disjunct distribution in Canada and USA. The former Blue Ridge race of the Atlantic slope of the Appalachian Mountains is now recognized as a distinct species Cottus caeruleomentum.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 15.0 cm TL male/unsexed; (Ref. 5723); common length : 8.4 cm TL male/unsexed; (Ref. 12193); max. reported age: 2.00 years (Ref. 12193)

Biology     Glossary (e.g. epibenthic)

Adults occur in rubble and gravel riffles, less often in sand-gravel runs of headwaters, creeks and small rivers. Also found in springs and their effluents and rocky shores of lakes (Ref. 1998, 10294). Feed mainly on aquatic insect larvae, but also on crustaceans, annelids, fishes, fish eggs, and plant material (Ref. 1998, 10294). Spawn in the spring (Ref. 1998). A male guards the cluster of eggs laid by different females (Ref. 1998). Neither anterolateral glandular groove nor venom gland is present (Ref. 57406).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Male selects a nesting site under a rock of ledge. Male entices a female to enter the nest. Female deposits eggs on the upper surface of the rock and leaves or is driven out of the nest. Eggs are deposited by different females. The male guards the eggs from predators and maintains a natural current flow (Ref. 1998). Also Ref. 53335.

Main reference Upload your references | References | Coordinator | Collaborators

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 Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 08 November 2011

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

Countries
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Ecosystems
Occurrences
Introductions
Stocks
Ecology
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Common names
Synonyms
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Predators
Ecotoxicology
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Fecundity
Eggs
Egg development
Age/Size
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Length-weight
Length-length
Length-frequencies
Morphometrics
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Ciguatera
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Internet sources

AFORO (otoliths) | Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00300 - 0.01523), b=3.17 (2.98 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.3   ±0.46 se; based on food items.
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (tmax=2).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).