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💧 Freshwater Least Concern 🌡️ Tropical

Marcusenius Krameri

Marcusenius krameri Maake, Gon & Swartz, 2014
Max Length
19.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
24.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Individuals of this species were found in groups; during the day they were commonly encountered below undercut river banks, especially in dense networks of tree roots or reed beds along the stream margins; places with shallow water and slow-flowing reaches of rivers and streams are especially attractive to them . Large numbers of small juveniles were found in bushes of aquatic reeds and floating grass on the periphery of the river or in side channels .

Scientific Name
Marcusenius krameri
Authority
Maake, Gon & Swartz, 2014
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
19.7 cm
Trophic Level
3.1
Resilience
High
Vulnerability
24.00/100
Water Temp
17–27 °C
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 22 - 25; Anal spines: 0; Anal soft rays: 28 - 31; Vertebrae: 44. Diagnosis: Marcusenius krameri can be distinguished from its congeners by following characters: middle body depth 21.9-28.1% of standard length; distance from dorsal fin origin to end of caudal peduncle 39.9-41.7% of standard length; distance from anal fin origin to end of caudal peduncle 42.8-44.9% of standard length; dorsal fin length 15.5-20.0% of standard length; anal fin length 23.2-25.5% of standard length; depth of caudal peduncle 26.0-40.6% of its length; scales around caudal peduncle 16; total vertebrae 44; anterior gill rakers (5-6)+(5); total anterior gill rakers 10-11; posterior gill rakers (8)+(9); total posterior gill rakers 17; dorsal fin rays 22-25; anal fin rays 28-31; scales along lateral line 69-72; conical teeth on upper/lower jaws 4-6 . : elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Marcusenius Krameri 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; 17°C - 27°C ; 24°S - 25°S South Africa (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00562 × L3.05 (TL)
Max TL
19.7cm
Dorsal Rays
24
Anal Rays
30
Vertebrae
44

🌡️ Water Parameters & Tolerance

Temperature Range
17–27°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2016

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
24.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Maake, Gon & Swartz, 2014

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