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💧 Freshwater Least Concern 🌡️ Tropical

Brienomyrus Brachyistius

Brienomyrus brachyistius Gill, 1862
Max Length
20 cm
Max Weight
-
Lifespan
-
Trophic Level
2.8
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
20.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Affinities: Brienomyrus longianalis. Occurs in most coastal basins in West Africa . Within this species complex, four distinct waveforms of electric organ discharge (EOD) were noted in the Gabon (Ivindo River) populations, probably pointing to separate species . Exhibits sexual dimorphism in its EOD waveform and duration. EOD has a constant waveform and variable sequence of pulse intervals (SPI) .

Scientific Name
Brienomyrus brachyistius
Authority
Gill, 1862
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
20 cm
Trophic Level
2.8
Resilience
Medium
Vulnerability
20.00/100
Water Temp
25–28 °C

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Osteoglossiformes
Osteoglossiformes
Family
Mormyridae
Mormyridae
Genus
Brienomyrus
Brienomyrus
Species
Brienomyrus Brachyistius
Brienomyrus brachyistius

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 14 - 19; Anal spines: 0; Anal soft rays: 25 - 31. Dorsal base 0.41-0.68 x anal fin base. Pectorals as long as head, posterior end does not extend origin of pelvic fins. Caudal peduncle thin, height 14.4-22.9x of SL. Dark grey-black or brown coloration.: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Brienomyrus Brachyistius is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; brackish; benthopelagic. Tropical; 25°C - 28°C

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish
Trophic Level
2.8±0.31

📐 Morphometrics

Length–Weight Relationship: W = 0.00871 × L2.71 (TL)
Max TL
20cm
Dorsal Rays
17
Anal Rays
28

🌡️ Water Parameters & Tolerance

Temperature Range
25–28°C

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
20.00/100
Low vulnerability
Trophic Level
2.8
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Gill, 1862

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 296 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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