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💧 Freshwater Critically Endangered 🍽️ Edible 🌡️ Tropical

Masked julie

Julidochromis transcriptus Matthes, 1959
Max Length
7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Rock-dwelling. Usually solitary, territorial. Feeds on microorganisms . Aquarium keeping: in pairs; minimum aquarium size 60 cm .

Scientific Name
Julidochromis transcriptus
Authority
Matthes, 1959
Habitat
Freshwater
Climate
Tropical
IUCN Status
CR
Max Length
7 cm
Trophic Level
3.5
Resilience
High
Vulnerability
10.00/100
Water Temp
22–25 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Masked julie is currently being compiled.

🌀 Behaviour

Behavioural data for Masked julie is currently being reviewed.

🦐 Diet

Diet information for Masked julie is currently being compiled.

🥚 Reproduction

Reproduction data for Masked julie is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 8.5 - 9.2; dH range: 8 - 14. Tropical; 22°C - 25°C ; 3°S - 6°S northwest shore of Lake Tanganyika, between Luhanga and Makabola (Democratic Republic of the Congo).

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.5±0.37
🧍 Solitary
Food Items

microorganisms (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
7cm

🌡️ Water Parameters & Tolerance

Temperature Range
22–25°C
pH Range
8.5–9.2
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2025

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.5
Predator
Climate Zone
Tropical
Described By
Matthes, 1959

🍽️ Edibility & Flavour

"Masked julie 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 Masked julie is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Masked julie 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-and-white julie · Masked Julie
🌍AFR Pongo Mayi
🌍CES cichlidka mramorovaná
🇫🇮Finnish täpläkoruahven
🇷🇺Russian Масковый юлидохром

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 17 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

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View all observations for Masked julie ↗
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