Scientific Name
Nannoperca variegata

Common Name
Golden pygmy perch

Biology
Inhabits flowing streams and ponds in clear water, most common in creeks between ponds (Ref. 5259). Occurs in small, swiftly flowing, well-vegetated creeks in clear, cool water (14?-16?C), over gravel or cobbles. Often found around accumulated flood debris and log snags Feeds on aquatic insects and benthic microcrustaceans. Breeds from spring to early summer. First discovered in the early 1980s. Co-occurs with N. australis at Ewen ponds, but generally prefers faster flowing streams rather than ponds (Ref. 44894). Aquarium conditions: pH=7.2, H=8, 22?C water temperature, carnivore, egg layer, peaceful community fish requiring rock and plant cover (Ref. 6398).

Classification

Classified By

Kuiter & Allen, 1986

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Temperate perches (Percichthyidae)

Distribution

Region

Oceania

Distribution

Oceania: South Australia (only from Ewens ponds near Mount Gambier) and western Victoria (from a small creek at Winnap, Glenelg River system), Australia (also Ref. 5259).

Range

36°S - 37°S

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; benthopelagic; non-migratory

Trophic Level

3.17 s.e. 0.36 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

6.5 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5625 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of no interest; aquarium: commercial

Vulnerability

Low vulnerability (21 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (tmax=4)

Threat To Humans

Harmless

IUCN Red List Status

Vulnerable (VU) (D2)