New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

💧 Freshwater Least Concern 🍽️ Edible 🌡️ Temperate

Blackspotted topminnow

Fundulus olivaceus Storer, 1845
Max Length
8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Temperate
Resilience
High
Vulnerability
12.00/100
Typical Length
7.5 cm
Depth Zone
-

📖 Overview

Adults inhabit near surface of quiet to flowing water, usually near margins of clear, sandy to gravelly headwaters, creeks and small rivers. 9.7 cm max TL . They feed on terrestrial arthropods, aquatic insects, small crustaceans, and diatoms . Spawning occurs over gravel . Not a seasonal killifish. Is easy to maintain in the aquarium .

Scientific Name
Fundulus olivaceus
Authority
Storer, 1845
Habitat
Freshwater
Climate
Temperate
IUCN Status
LC
Max Length
8 cm
Trophic Level
3.2
Resilience
High
Vulnerability
12.00/100
Migration
Non-migratory
Water Temp
15–25 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Blackspotted topminnow is currently being compiled.

🌀 Behaviour

Behavioural data for Blackspotted topminnow is currently being reviewed.

🦐 Diet

The blackspotted topminnow eats various arthropods and algae.

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic; non-migratory . Temperate; 15°C - 25°C ; 38°N - 29°N North America: Mississippi River basins from eastern Tennessee, western Kentucky, southern Illinois and central Missouri south to Gulf of Mexico (west to central Oklahoma) in the USA; Gulf Slope drainages from Chattahoochee River in Georgia to Galveston Bay in Texas, USA.

🌿 Ecology

Zone Preferences
💧 Freshwater
Migration
Non-migratory
Trophic Level
3.2±0.2
Food Items

terrestrial arthropods, aquatic insects, small crustaceans, and diatoms (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00724 × L3.17 (TL)
Max TL
8cm

🌡️ Water Parameters & Tolerance

Temperature Range
15–25°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2012

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
12.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Temperate
Described By
Storer, 1845

🍽️ Edibility & Flavour

"Blackspotted topminnow 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 Blackspotted topminnow is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Blackspotted topminnow 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
✓ Sustainable Choice

🔬 Full Nutritional Profile

Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)

Proximate Composition
Energy125 kcal
Moisture75 %
Protein20 %
Total Fat4 %
Ash1.3 %
Fatty Acids (g)
Saturated Fat1 g
Monounsaturated Fat1.2 g
Polyunsaturated Fat1.5 g
Omega-3 Total1 g
EPA0.3 g
DHA0.5 g
Omega-6 Total0.3 g
Key Minerals & Vitamins
Calcium20 mg
Iron0.7 mg
Magnesium30 mg
Phosphorus220 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium32 µg
Vitamin B122 µg

📊 Population Dynamics

Year Region Index Notes
- - -

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Fundulus balboae Fowler 1916 Synonym
Fundulus lateralis Agassiz 1854 Synonym
Fundulus pulchellus Girard 1859 Synonym
Poecilia olivacea Storer 1845 Synonym
Zygonectes lateralis Agassiz 1854 Synonym
Zygonectes pulchellus Girard 1859 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 67 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Blackspotted topminnow ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.