Yarra pygmy perch (Nannoperca obscura)

Scientific name: Nannoperca obscura Klunzinger, 1872

The Yarra pygmy perch (Nannoperca obscura) is a freshwater fish of the family Percichthyidae. In the aquarium it needs water at 10–30°C (50–86°F).

Yarra pygmy perch care at a glance

Temperature
10–30°C (50–86°F)

Biology

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. Slight morphological differences exist between populations from the extreme western and eastern parts of the range that could warrant their placement into separate subspecies.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Nannoperca obscura
Family
Percichthyidae (Temperate perches)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
7.5
Common length
5.0
Environment
Freshwater; brackish; benthopelagic
Climate
Temperate
Distribution
Oceania: coastal drainages of southwestern Victoria from Frankston to the south Australian border. Has recently sampled in Bool Lagoon drainage system, eastern South Australia and western Victoria.
Conservation status (IUCN)
Vulnerable (VU)(B1+2bc)
Threat to humans
Harmless
Uses
Fisheries: of no interest; aquarium: commercial
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Assuming Fec

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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