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💧 Freshwater Least Concern 🌡️ Temperate

Mottled sculpin

Cottus bairdii Girard, 1850
Max Length
15 cm
Max Weight
-
Lifespan
2 yrs
Trophic Level
3.3
Depth
-
Climate
Temperate
Resilience
High
Vulnerability
34.00/100
Typical Length
8.4 cm
Depth Zone
demersal

📖 Overview

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 . They feed mainly on aquatic insect larvae, but also on crustaceans, annelids, fishes, fish eggs, and plant material . Spawn in the spring . A male guards the cluster of eggs laid by different females . Neither anterolateral glandular groove nor venom gland is present .

Scientific Name
Cottus bairdii
Authority
Girard, 1850
Habitat
Freshwater
Climate
Temperate
IUCN Status
LC
Max Length
15 cm
Lifespan
2 years
Trophic Level
3.3
Resilience
High
Vulnerability
34.00/100
Migration
Non-migratory
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Mottled sculpin is currently being compiled.

🌀 Behaviour

Behavioural data for Mottled sculpin is currently being reviewed.

🦐 Diet

Diet information for Mottled sculpin is currently being compiled.

🥚 Reproduction

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 . Also Ref. 53335.

🌍 Habitat & Distribution

Freshwater; demersal; non-migratory ; depth range ? - 16 m . Temperate; 59°N - 34°N North America: widespread with highly disjunct distribution in Canada and USA.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Non-migratory
Trophic Level
3.3±0.46
Food Items

aquatic insect larvae, but also on crustaceans, annelids, fishes, fish eggs, and plant material (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00759 × L3.15 (TL)
Max TL
15cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
34.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Temperate
Described By
Girard, 1850

🌐 Names & Taxonomy

Language Common Names
🇬🇧English mottled sculpin · Beard's Sculpin · Blob · Bullhead · Cabezon · Columbia Sculpin · Freshwater Sculpin · Gudgeon · Miller's Thumb · Muddler · Sculpin · Sea Raven · Speckled Sculpin
🇫🇷French chabot tacheté

Scientific Synonyms

Scientific Name Author Year Status
Cottopsis semiscaber Cope 1872 Synonym
Cottus bairdii bairdii - - Synonym
Cottus bairdii kumlieni Hoy 1876 Synonym
Cottus bairdii punctulatus Gill 1861 Synonym
Cottus bairdii semiscaber Cope 1872 Synonym
Cottus hubbsi bairdii Girard 1850 Synonym
Cottus ictalops Rafinesque 1820 Synonym
Cottus meridionalis Girard 1850 Heterotypic
Cottus punctulatus Gill 1861 Synonym
Cottus richardsoni Agassiz 1850 Synonym
Cottus semiscaber Cope 1872 Synonym
Pegedictis ictalops Rafinesque 1820 Synonym
Potamocottus punctulatus Gill 1861 Synonym
Uranidea kumlieni Hoy 1876 Synonym
Uranidea richardsoni Agassiz 1850 Synonym
Uranidea semiscabra Cope 1872 Synonym
Uranidea semiscabra centropleura Eigenmann & Eigenmann 1889 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 206 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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