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💧 Freshwater Least Concern 🌡️ Temperate

Creek chub

Semotilus atromaculatus Mitchill, 1818
Max Length
30.3 cm
Max Weight
-
Lifespan
8 yrs
Trophic Level
4
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
34.00/100
Typical Length
19.1 cm
Depth Zone
demersal

📖 Overview

Adults inhabit rocky and sandy pools of headwaters, creeks and small rivers . Mostly found in tiny, intermittent streams. Young feed on small aquatic invertebrates while adults consume small fish, crayfish and other large invertebrates . One of the most common fishes in eastern North America .

Scientific Name
Semotilus atromaculatus
Authority
Mitchill, 1818
Habitat
Freshwater
Climate
Temperate
IUCN Status
LC
Max Length
30.3 cm
Lifespan
8 years
Trophic Level
4
Resilience
Medium
Vulnerability
34.00/100
Migration
Potamodromous
Water Temp
0–30 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 8. Semotilus atromaculatus is distinguished by having the following characters: body barely compressed at front, compressed at caudal peduncle; mouth pointed; 47-65 scales on lateral line; dorsal fin with 8 rays; large black spot at front of dorsal fin base, black caudal spot (not distinct in large individuals); large terminal mouth reaching past front of eye. Coloration consists of gray-brown above, dark stripe along back; herringbone lines on upper side in young; dusky black stripe (darkest on young) along olive-silver side, around snout and onto upper lip; black bar along back of gill cover; and orange at dorsal base, orange lower fins, blue on side of head, pink on lower half of head and body, and 6-12 large tubercles on head in breeding males .

🌀 Behaviour

Behavioural data for Creek chub is currently being reviewed.

🦐 Diet

Diet information for Creek chub is currently being compiled.

🥚 Reproduction

Spawn Location
Gravel

Male digs a pit in the stream bottom by removing mouthful of gravel, guards the pit and attempts to attract females. Spawning occurs over the pit. Male guards the nest from intruders. As eggs are deposited in the pit, the male covers them with stones and excavates another pit immediately downstream. As spawning continues and the male covers the eggs, a long ridge of gravel develops.

🌍 Habitat & Distribution

Freshwater; demersal; potamodromous . Temperate; 0°C - 30°C ; 55°N - 31°N North America: most of east USA and southeast Canada in Atlantic, Great Lakes, Hudson Bay, Mississippi, and Gulf basins as far west as Saskatchewan, Wyoming, and Brazos River in Texas, but absent from Florida and south Georgia; isolated population in the upper Pecos and Canadian River systems, New Mexico.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Potamodromous
Trophic Level
4±0.5
Food Items

small aquatic invertebrates while adults consume small fish, crayfish and other large invertebrates

📐 Morphometrics

Length–Weight Relationship: W = 0.00617 × L3.05 (TL)
Max TL
30.3cm
Dorsal Rays
8

🌡️ Water Parameters & Tolerance

Temperature Range
0–30°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2012

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
34.00/100
Low vulnerability
Trophic Level
4
Apex / Top predator
Climate Zone
Temperate
Described By
Mitchill, 1818

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Common Creek Chub · Creek Chub · Horned dace · Chub
🌍CES Semotilus cernoskvrnný · střevle černoskvrnná
🇩🇪German Bachzwergdöbel
🇫🇮Finnish Juovakoskisärki
🇫🇷French mulet à cornes
🇵🇱Polish Klenik potokowy
🇷🇺Russian Семотилус северный
🇪🇸Spanish Cachorro de arroyo común
🇨🇳Chinese 黑斑鬚雅羅魚

Scientific Synonyms

Scientific Name Author Year Status
Cyprinus atromaculatus Mitchill 1818 Synonym
Leuciscus evermanni Juday 1905 Synonym
Leuciscus iris Valenciennes 1844 Synonym
Leuciscus pulchelloides Ayres 1850 Synonym
Leucosomus incrassatus Girard 1856 Synonym
Leucosomus pallidus Girard 1856 Synonym
Semotilus atromaculatus atromaculatus - - Synonym
Semotilus cephalus Rafinesque 1820 Synonym
Semotilus dorsalis Rafinesque 1820 Synonym
Semotilus hammondii Abbott 1860 Synonym
Semotilus macrocephalus Girard 1856 Synonym
Semotilus speciosus Girard 1856 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 740 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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