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💧 Freshwater Near Threatened 🍽️ Edible 🌡️ Subtropical

Blackfin pearlfish

Argolebias nigripinnis Regan, 1912
Max Length
7 cm
Max Weight
-
Lifespan
1 yrs
Trophic Level
3.1
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
10.00/100
Typical Length
4.5 cm
Depth Zone
pelagic

📖 Overview

Adults feed on worms, crustaceans and insects . They are bottom spawners, 2-4 months incubation. Is easy to maintain in the aquarium .

Scientific Name
Argolebias nigripinnis
Authority
Regan, 1912
Habitat
Freshwater
Climate
Subtropical
IUCN Status
NT
Max Length
7 cm
Lifespan
1 years
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Migration
Non-migratory
Water Temp
18–22 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Argolebias
Argolebias
Species
Blackfin pearlfish
Argolebias nigripinnis

🐟 Physical Description

Physical description for Blackfin pearlfish is currently being compiled.

🌀 Behaviour

Behavioural data for Blackfin pearlfish is currently being reviewed.

🦐 Diet

Diet information for Blackfin pearlfish is currently being compiled.

🥚 Reproduction

Reproduction data for Blackfin pearlfish is currently being compiled.

🌍 Habitat & Distribution

Freshwater; pelagic; pH range: 6.0 - 7.0; dH range: 5 - 12; non-migratory . Subtropical; 18°C - 22°C South America: Lower Paraná and Uruguay River basins.

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Migration
Non-migratory
Trophic Level
3.1±0.32
Food Items

worms, crustaceans and insects (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00603 × L3.14 (TL)
Max TL
7cm

🌡️ Water Parameters & Tolerance

Temperature Range
18–22°C
pH Range
6–7
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2021

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Climate Zone
Subtropical
Described By
Regan, 1912

🍽️ Edibility & Flavour

"Argolebias Nigripinnis 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 Blackfin pearlfish is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Blackfin pearlfish 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

👥 Community & Contribute

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