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💧 Freshwater Least Concern 🍽️ Edible ⚡ Potential pest 🌡️ Subtropical

Fathead minnow

Pimephales promelas Rafinesque, 1820
Fathead Minnow (Pimephales promelas)
Fathead Minnow (Pimephales promelas)
Max Length
10.1 cm
Max Weight
Lifespan
5 yrs
Trophic Level
2.4
Depth
Climate
Subtropical
Resilience
High
Vulnerability
17.00/100
Typical Length
7.3 cm
Depth Zone
demersal

📖 Overview

Adults inhabit muddy pools of headwaters, creeks, small rivers, and ponds . Also found in lakes . Can tolerate conditions (e.g., turbid, hot, poorly oxygenated, intermittent streams) unsuitable for most fishes . They feed on detritus and algae . Spawning occurs in still-water habitats along shores . Introductions consequently caused the spread of the enteric red-mouth disease throughout northern Europe which infected wild and cultured trouts and eels . Maintained a relatively high metabolic rate and level of activity under hypoxic conditions . Individuals that survived the hypoxic conditions during winter had rapid growth rates after ice-off .

Scientific Name
Pimephales promelas
Authority
Rafinesque, 1820
Habitat
Freshwater
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
10.1 cm
Lifespan
5 years
Trophic Level
2.4
Resilience
High
Vulnerability
17.00/100
Migration
Non-migratory
Water Temp
0–33 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 8; Anal spines: 0; Anal soft rays: 7. The only species of genus introduced to Europe which differs from other cyprinid species in Europe by the following characters: prominent pad of spongy tissue on nape in males; dorsal fin origin about above pelvic fin origin; anal fin with 7½ branched rays; second simple dorsal ray spinous, about 50% length of the third one; lateral line incomplete, usually not reaching dorsal origin; weak midlateral stripe; 41-54 + 2 scales in midlateral row; and mouth terminal .: fusiform / normal.

🌀 Behaviour

Behavioural data for Fathead minnow is currently being reviewed.

🦐 Diet

Diet information for Fathead minnow is currently being compiled.

🥚 Reproduction

"Males defend territories and eggs, and clean plants, stone or other materials by rubbing them with the spongy nape pad and dorsal fin, which contain mucus-secreting cells and taste buds. The mucus may have fungicidal properties" .

🌍 Habitat & Distribution

Freshwater; demersal; non-migratory . Subtropical; 0°C - 33°C ; 61°N - 29°N North and Central America: Over much of North America from Quebec to Northwest Territories and British Columbia in Canada and south to Alabama, Texas in USA, and Mexico.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Non-migratory
Trophic Level
2.4±0.1
Food Items

detritus and algae (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00851 × L3.07 (TL)
Max TL
10.1cm
Dorsal Rays
8
Anal Rays
7

🌡️ Water Parameters & Tolerance

Temperature Range
0–33°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
17.00/100
Low vulnerability
Trophic Level
2.4
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Rafinesque, 1820

🍽️ Edibility & Flavour

"Fathead minnow is an edible species."

✗ Not for Raw
✓ Fresh Indicators
  • Clear, bright eyes — cloudy eyes indicate age
  • Firm flesh that springs back when pressed
  • Fresh ocean smell, never strong or ammonia-like
  • Bright red or pink gills, not grey or brown
  • Shiny, moist skin with scales tightly attached
✗ Avoid If
  • Cloudy or sunken eyes
  • Strong fishy or ammonia odour
  • Soft, mushy flesh that doesn't spring back
  • Discoloured or dry flesh
Best Cooking Methods
Baking Grilling Pan-frying

Nutrition

Detailed nutritional data for Fathead minnow is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Fathead minnow has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.

🌿 Sustainability

Best Choice
Healthy stocks, low impact
Good Alternative
Well-managed, minor concerns
Use Caution
Check sourcing and season
Avoid
Overfished or high impact

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Black-head Minnow · Blackhead · Fathead · Fathead Minnow · Fathead Minnow (Rosy Reds) · Mudminnow · Rosey Reds · Rosy-red Minnow · Tuffy
🌍CES jeleček velkohlavý
🇩🇰Danish Tyrehoved
🇩🇪German Amerikanische Dickkopfelritze · Amerikanische Elritze · Dickkopf-Elritze · Fettköpfige Elritze
🇫🇮Finnish paksupäämutu
🇫🇷French Méné à grosse tête · Tête de boule · Tête de boule, Vairon canadien · tête-de-boule · Vairon américain
🇯🇵Japanese ファットヘッドミノー
🌍LAV Melnais resngalvis
🇳🇱Dutch Amerikaanse dikkop-elrits · amerikaanse elrits, amerikaanse dikkop-elrits · Dikkopelrits
🇵🇱Polish strzebla grubogłowa
🇷🇺Russian Чёрный толстоголов
🌍SLV tolstoglavi pisanec
🇪🇸Spanish carpita cabezona
🇸🇪Swedish knölskallelöja

Scientific Synonyms

Scientific Name Author Year Status
Cliola smithii Evermann & Cox 1896 Synonym
Coliscus parietalis Cope 1871 Synonym
Colistus parietalis Cope 1871 Synonym
Hyborhynchus confertus Girard 1856 Synonym
Hyborhynchus nigellus Cope 1875 Synonym
Hyborhynchus puniceus Girard 1856 Synonym
Pimepales promelas Rafinesque 1820 Synonym
Pimephales agassizii Cope 1867 Synonym
Pimephales anuli Kendall 1903 Synonym
Pimephales fasciatus Girard 1856 Synonym
Pimephales maculosus Girard 1856 Synonym
Pimephales milesii Cope 1865 Synonym
Pimephales promelas harveyensis Hubbs & Lagler 1949 Synonym
Pimephales promelas promelas Rafinesque 1820 Synonym
Pimephalus promelas Rafinesque 1820 Synonym
Plargyrus melanocephalus Abbott 1860 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) — 195 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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