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💧 Freshwater Vulnerable 🍽️ Edible 🌡️ Tropical

aquarium

Matilebias alexandri Castello & López, 1974
Max Length
9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
5 cm
Depth Zone
-

📖 Overview

aquarium (Matilebias alexandri), first described by Castello & López, 1974 is a small fish. Adults typically reach 9.00 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Vulnerable.The species is important as a food fish.

Scientific Name
Matilebias alexandri
Authority
Castello & López, 1974
Habitat
Freshwater
Climate
Tropical
IUCN Status
VU
Max Length
9 cm
Trophic Level
3.3
Resilience
High
Vulnerability
10.00/100
Migration
Non-migratory
Water Temp
22–28 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Matilebias
Matilebias
Species
aquarium
Matilebias alexandri

🐟 Physical Description

Physical description for aquarium is currently being compiled.

🌀 Behaviour

Behavioural data for aquarium is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 6.5 - 7.0; dH range: 5 - 8; non-migratory. Tropical; 22°C - 28°C South America: Uruguay River basin in Argentina, Brazil and Uruguay.

🌿 Ecology

Zone Preferences
💧 Freshwater
Migration
Non-migratory
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00603 × L3.14 (TL)
Max TL
9cm

🌡️ Water Parameters & Tolerance

Temperature Range
22–28°C
pH Range
6.5–7
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Tropical
Described By
Castello & López, 1974

🍽️ Edibility & Flavour

"Matilebias Alexandri 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 aquarium is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for aquarium 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

📊 Population Dynamics

Year Region Index Notes
- - -

👥 Community & Contribute

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