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💧 Freshwater Critically Endangered 🌡️ Tropical

aquarium

Melanotaenia longispina Kadarusman, Avarre & Pouyaud, 2015
Max Length
8.7 cm
Max Weight
-
Lifespan
-
Trophic Level
2.9
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
35.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Collected from the type locality, a river which flows through secondary rainforest over gravel and sandy bottom. The habitat has turbid water and no aquatic vegetation. Maximum length based on type specimen, to be replaced with a better reference .

Scientific Name
Melanotaenia longispina
Authority
Kadarusman, Avarre & Pouyaud, 2015
Habitat
Freshwater
Climate
Tropical
IUCN Status
CR
Max Length
8.7 cm
Trophic Level
2.9
Resilience
Medium
Vulnerability
35.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

This species is distinguished from its congeners in the Birds Head region by the following characters: D IV-VI+I, 13-14; A I, 23-26; 37-40 lateral scales; 10 transverse scales; 19-21 anterior scales; 17-18 cheek scales; 19 gillrakers on first arch; short head length, 24.1-25.2% of SL; thin interorbital width, 7.8-8.2% of SL; long predorsal length, 50.2-51.8% of SL; long pelvic fin length, 19.6-20.4% of SL; long spine length on first dorsal fin, 13.1-15.3% of SL; moderately elongate second dorsal fin spine, 12.4-15.7% of SL; elongate anal fin spine, 10.1-11.3% of SL; short dorsal fin base, 33.4-36.5% of SL; short 2nd dorsal fin base, 20.2-22.6% of SL; dorsal fin base protruding vertically behind anal origin, between 1st and 3rd anal soft ray; absence of stripes on dorsal fins margin .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; pH range: 7.4 - ?. Tropical; 28°C - ? West Papua).

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.9±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01122 × L3.04 (TL)
Max TL
8.7cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
35.00/100
Low vulnerability
Trophic Level
2.9
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Kadarusman, Avarre & Pouyaud, 2015

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