New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

💧 Freshwater Endangered 🌡️ Temperate

Yarra pygmy perch

Nannoperca obscura Klunzinger, 1872
Max Length
7.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
15.00/100
Typical Length
5 cm
Depth Zone
-

📖 Overview

Inhabits streams and small lakes; prefers flowing water with abundant cover in the form of aquatic vegetation . Occurs in creeks and lakes, usually among aquatic weeds. Feeds on insects, insect larvae and planktonic crustaceans . Swims in small shoals, sometimes with N. australis. Breeding season is in spring (September and October). Slight morphological differences exist between populations from the extreme western and eastern parts of the range that could warrant their placement into separate subspecies .

Scientific Name
Nannoperca obscura
Authority
Klunzinger, 1872
Habitat
Freshwater
Climate
Temperate
IUCN Status
EN
Max Length
7.5 cm
Trophic Level
3.2
Resilience
Medium
Vulnerability
15.00/100
Water Temp
10–30 °C

🐟 Physical Description

Physical description for Yarra pygmy perch is currently being compiled.

🌀 Behaviour

Behavioural data for Yarra pygmy perch is currently being reviewed.

🦐 Diet

Diet information for Yarra pygmy perch is currently being compiled.

🥚 Reproduction

Size at Maturity
4cm TL

🌍 Habitat & Distribution

Freshwater; brackish; benthopelagic. Temperate; 10°C - 30°C ; 37°S - 38°S south Australian border.

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish
Trophic Level
3.2±0.36
Food Items

insects, insect larvae and planktonic crustaceans (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01047 × L3.01 (TL)
Max TL
7.5cm

🌡️ Water Parameters & Tolerance

Temperature Range
10–30°C

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
15.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Temperate
Described By
Klunzinger, 1872

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Yarra pygmy perch ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.