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💧 Freshwater 🌡️ Tropical

aquarium

Melanotaenia jakora Graf, Ohee, Herder & Haryono, 2023
Max Length
6.3 cm
Max Weight
-
Lifespan
-
Trophic Level
2.9
Depth
0–1 m
Climate
Tropical
Resilience
High
Vulnerability
30.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Found in a small rainforest creek crossing the road from Meyado to the village of Jakora. The collection site with water dark with tannin. Its typical habitats were characterized by muddy substrate and without submerged aquatic vegetation. It was recorded in undisturbed habitats that are partially covered by forest canopy, and in disturbed sites open to sunlight. Water parameters were 26.4 °C, 30 uS, pH 6.4, with hardness below measurability. The only associated fish species was another unidentified Melanotaenia sp. .

Scientific Name
Melanotaenia jakora
Authority
Graf, Ohee, Herder & Haryono, 2023
Habitat
Freshwater
Climate
Tropical
Max Length
6.3 cm
Depth Range
0–1 m
Trophic Level
2.9
Resilience
High
Vulnerability
30.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 4 - 6; Dorsal soft rays (total): 9 - 12; Anal spines: 1; Anal soft rays: 18 - 22. This species is distinguished from its congeners by the following set of characters: D IV (III–V) + I,10 (9-12); A I,20 (18-22); gill rakers on lower limb of first arch 14 (11-17); dorsal and anal fins are elongated in adult males, tips reaching base of caudal fin. Colouration: no dark margins of the scales, reflective blue shine of the body, solid midlateral stripe with no color disruptions .Cross section: compressed.

🌀 Behaviour

Behavioural data for aquarium 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; depth range 0 - 1 m . Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.9±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01122 × L3.04 (TL)
Max TL
6.3cm
Dorsal Spines
5
Dorsal Rays
11
Anal Spines
1
Anal Rays
20

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
30.00/100
Low vulnerability
Trophic Level
2.9
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Graf, Ohee, Herder & Haryono, 2023

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