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💧 Freshwater Least Concern 🌡️ Tropical

Victoria robber

Brachyalestes jacksonii Boulenger, 1912
Max Length
27 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
0–20 m
Climate
Tropical
Resilience
High
Vulnerability
30.00/100
Typical Length
23 cm
Depth Zone
pelagic

📖 Overview

In Lake Victoria confined to shallow coastal areas , in water less than 20 m deep . Omnivore, feeding on aquatic plants, surface insects and small fishes, and sometimes on molluscs . Known to run up rivers and streams in Lake Victoria during rainy season . Apparently rare since introduction of Lates .

Scientific Name
Brachyalestes jacksonii
Authority
Boulenger, 1912
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
27 cm
Depth Range
0–20 m
Trophic Level
3.3
Resilience
High
Vulnerability
30.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Brachyalestes
Brachyalestes
Species
Victoria robber
Brachyalestes jacksonii

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 10; Anal spines: 0; Anal soft rays: 18 - 19. Anal fin margin of females straight or very slightly concave; markedly convex in males (individual rays are stouter and coarser than those of females). Silver, bluish-grey to black-blue dorsally. Large black blotch on the caudal peduncle, with narrow extension on the caudal fin; round black spot behind the head. Dorsal fin grey, adipose dorsal fin orange. All fins grey in color; other specimens all yellowish (except for pectorals). Anal and pelvic fins of a faint orange tinge or grey with a faint yellowish sheen .: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Victoria robber is currently being reviewed.

🦐 Diet

Diet information for Victoria robber is currently being compiled.

🥚 Reproduction

Reproduction data for Victoria robber is currently being compiled.

🌍 Habitat & Distribution

Freshwater; pelagic; depth range 0 - 20 m . Tropical east some affluent streams and rivers), Lake Nabugabo, Malawa River, Victoria Nile (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Feeding Mode
Omnivore
Trophic Level
3.3±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.01072 × L3.02 (TL)
Max TL
27cm
Dorsal Rays
10
Anal Rays
19

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
30.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Boulenger, 1912

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