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💧 Freshwater Least Concern 🌡️ Tropical

Oreochromis Mweruensis

Oreochromis mweruensis Trewavas, 1983
Max Length
23.8 cm
Max Weight
Lifespan
Trophic Level
Depth
Climate
Tropical
Resilience
High
Vulnerability
20.00/100
Typical Length
Depth Zone

📖 Overview

Young Oreochromis mweruensis feed on epiphytic filamentous algae in swampy areas , but also accept small invertebrates and zooplankton, a tendency they lose with age . Adults feed on filamentous algae and detritus and bottom deposits, but those that migrated to the deeper northern end feed almost exclusively on plankton .

Scientific Name
Oreochromis mweruensis
Authority
Trewavas, 1983
Habitat
Freshwater
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
23.8 cm
Resilience
High
Vulnerability
20.00/100
Migration
Non-migratory

🐟 Physical Description

Dorsal spines (total): 15 - 17; Dorsal soft rays (total): 11 - 14; Anal spines: 3; Anal soft rays: 9 - 12; Vertebrae: 30 - 32. Diagnosis: scales on cheek in 2-3 rows; caudal scales variable, not on the inter-radial membranes except at the base; never stiffening the fin; genital papilla large and tuberculate or scalloped, tasseled in breeding males; generally lighter or darker olive-green; breeding male iridescent dark green to blue-black on head, body and vertical fins; red edge to dorsal and caudal fins . : short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Oreochromis Mweruensis is currently being reviewed.

🦐 Diet

Diet information for Oreochromis Mweruensis is currently being compiled.

🥚 Reproduction

Spawn Location
Sandy
Size at Maturity
20.3cm TL

Spawns along the banks of lakes/rivers at an average depth of 12 to 13 m. Mating territory largely occupied by a low mound with 6-12 grooves or crests radiating from the small central concave area (star-shaped nest). Males build the star-shaped nests on a sandy substrates.

🌍 Habitat & Distribution

Freshwater; brackish; benthopelagic; non-migratory. Tropical; 7°S - 12°S

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish
Migration
Non-migratory
Food Items

epiphytic filamentous algae in swampy areas (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01862 × L3.02 (TL)
Max TL
23.8cm
Dorsal Spines
16
Dorsal Rays
13
Anal Spines
3
Anal Rays
11
Vertebrae
31

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
20.00/100
Low vulnerability
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Trewavas, 1983

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