New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

💧 Freshwater 🌡️ Tropical

Marcusenius Elegans

Marcusenius elegans Fricke & Kramer, 2022
Max Length
22.1 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
26.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Found in a series of stagnant pools; some pools were quite deep and inhabitated by hippos who could dive; the river banks were high and steep, and difficult to climb when wet, revealing high water and violent current at some times in the year .

Scientific Name
Marcusenius elegans
Authority
Fricke & Kramer, 2022
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
Max Length
22.1 cm
Trophic Level
3.1
Resilience
High
Vulnerability
26.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 26 - 30; Anal spines: 0; Anal soft rays: 31 - 35. Diagnosis: Marcusenius gracilis has notched teeth . A much smaller dorsal to anal fin base ratio distinguishes Marcusenius thomasi from M. gracilis, being 0.7 vs. 0.79; M. mento is characterized by a higher number of lateral line scales, more than 76 vs. less than 77 for M. gracilis; M. ussheri differs by its lower number of lateral line scales, less than 65 vs. more than 70 in M. gracilis, its smaller pectoral fin length to head ratio, which is less than 0.9, and its usually deeper caudal peduncle, the ratio caudal peduncle depth to length less than 0.3 vs. more than 0.32 in M. gracilis . Marcusenius furcidens is distinguished by a combination of its higher count of dorsal fin rays, being more than 29 vs. less than 30 in M. gracilis, a longer dorsal fin, a higher ratio of dorsal to anal fin base, being 0.78, and a greater body depth; males of M. furcidens have no distinct kink in the anal fin base, in contrast to the males of M. gracilis; relative to the P phase of its EOD, M. furcidens EODs have a stronger N phase amplitude than those of M. gracilis . : fusiform / normal.

🌀 Behaviour

Behavioural data for Marcusenius Elegans 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. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00562 × L3.05 (TL)
Max TL
22.1cm
Dorsal Rays
28
Anal Rays
33

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
26.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Fricke & Kramer, 2022

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Marcusenius Elegans ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.