Northern studfish
📖 Overview
Adults inhabit margins, pools and backwaters of creeks and small to medium rivers. Most commonly found in shallow sandy backwaters of clean rocky creeks. They feed on aquatic insect larvae and snails . Not a seasonal killifish. Is very difficult to maintain in aquarium .
🔬 Taxonomy
🐟 Physical Description
: elongated.
🌀 Behaviour
Behavioural data for Northern studfish is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic; non-migratory . Temperate; 15°C - 25°C ; 40°N - 31°N North America: USA: upper East Fork White River system in Indiana; upper Salt and Kentucky River drainages in Kentucky; upper Green, middle and lower Cumberland, and Tennessee River drainages; west of Mississippi River ; southwestern Mississippi in Mississippi and Gulf Slope drainages.
🌿 Ecology
aquatic insect larvae and snails (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Northern studfish is an edible species."
- 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
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Detailed nutritional data for Northern studfish is currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for Northern studfish has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | northern studfish · Tanasi Studfish |
| 🌍CES | fundul stříbroskvrnný |
| 🇰🇷Korean | 북미점박이송사리 |
| 🇷🇺Russian | Северный фундулюс |
| 🇪🇸Spanish | Sardinilla del norte |
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Poecilia catenata | Storer | 1846 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 25 records indexed .
👥 Community & Contribute
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