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💧 Freshwater Endangered 🌡️ Tropical

Nothobranchius Balamaensis

Nothobranchius balamaensis Bragança & Chakona, 2022
Max Length
3 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Found in pool in a seasonal stream course, less than 1 m in depth, with turbid and slow flowing water; riverbanks were covered by grass with remnants of Miombo vegetation .

Scientific Name
Nothobranchius balamaensis
Authority
Bragança & Chakona, 2022
Habitat
Freshwater
Climate
Tropical
IUCN Status
EN
Max Length
3 cm
Trophic Level
3.1
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 16 - 17; Anal spines: 0; Anal soft rays: 17 - 18. Diagnosis: Nothobranchius balamaensis is distinguished from all other members of the genus, except N. kirki, by the following unique combination of characters in males; body colouration bright iridescent light blue, with narrow brown-red to orange scale margins creating an irregular reticulated pattern; anal and caudal fins overall orange, darker in basal and proximal zones, grading through medial zone to lighter orange in distal zone and devoid of distinctive markings or banding; dorsal fin with marbled pattern in proximal region comprising irregular brown-red markings on yellow-orange background, distinct striated pattern parallel to fin rays in medial and distal zones with inter-ray membrane distinctive black between first 4-5 rays; anal fin shape mildly trapezoidal . Nothobranchius balamaensis differs from the closely related and most similar N. kirki by some elements of male colour pattern: anal fin devoid of markings or banding in proximal zone, vs. narrow light blue to white proximal band or series of irregular markings in N. kirki; dorsal fin with marbled proximal zone and prominently striated medial and distal zones, vs. marbled or vermicular pattern throughout proximal and medial zones with only a hint of striation pattern in distal zone of some specimens .

🌀 Behaviour

Behavioural data for Nothobranchius Balamaensis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; pelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01122 × L2.94 (TL)
Max TL
3cm
Dorsal Rays
17
Anal Rays
18

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2022

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Climate Zone
Tropical
Described By
Bragança & Chakona, 2022

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