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💧 Freshwater Critically Endangered 🌡️ Tropical

Myaka

Myaka myaka Trewavas, 1972
Max Length
6.7 cm
Max Weight
-
Lifespan
-
Trophic Level
2.6
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Prefers open water regions at greater depths, but ventures into the more shallow areas of the lake for spawning, which normally occurs during the rainy season; mainly feeds on phytoplankton and small insects; probably ovophilic mouthbrooder; males occupy a tertitory of ca. 50 cm and it is often possible to find large numbers of males in a limited area .

Scientific Name
Myaka myaka
Authority
Trewavas, 1972
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
CR
Max Length
6.7 cm
Trophic Level
2.6
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 14 - 15; Dorsal soft rays (total): 10 - 12; Anal spines: 3; Anal soft rays: 8 - 10; Vertebrae: 28 - 29. Diagnosis: mouth strongly upturned, making an angle of about 50° with the horizontal; outer row jaw teeth reduced and few in number, inner row teeth minute tricuspids; lower pharyngeal jaw markedly longer than wide, with a reduced dentigerous surface, and covered with a ‘felt’ of tiny unicuspid teeth . : fusiform / normal.

🌀 Behaviour

Behavioural data for Myaka is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 👄 Mouth Brooder 🛡️ Egg Guarder
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal. Tropical; 10°N - 3°N endemic to Lake Barombi Mbo, Cameroon (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
2.6±0.28
Food Items

phytoplankton and small insects; probably ovophilic mouthbrooder; males occupy a tertitory of ca

📐 Morphometrics

Length–Weight Relationship: W = 0.01445 × L2.99 (TL)
Max TL
6.7cm
Dorsal Spines
15
Dorsal Rays
11
Anal Spines
3
Anal Rays
9
Vertebrae
29

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
2.6
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Trewavas, 1972

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