Nannoperca obscura (Klunzinger, 1872)

Yarra pygmy perch

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Perciformes \| Percichthyidae
Synonyms	Paradules obscurus, Edelia obscura, Microperca yarrae, ... more
Common names	Yarra Zwergbarsch, 暗矮鲈, 暗色断线矮鲈(凹顶鲈), ... more

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Main reference

Allen, G.R. 1989. (Ref. 5259)
Other references | Biblio | Coordinator : Arratia, Gloria | Collaborators

Size / Weight / Age

Max length : 7.5 cm TL male/unsexed; (Ref. 5259); common length : 5.0 cm TL male/unsexed; (Ref. 5259)

Environment

Benthopelagic; freshwater; brackish

Climate / Range

Temperate; 10°C - 30°C (Ref. 2060); 37°S - 38°S

Oceania: coastal drainages of southwestern Victoria from Frankston (Melbourne) to the south Australian border. Has recently sampled in Bool Lagoon drainage system, eastern South Australia and western Victoria.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Inhabits streams and small lakes; prefers flowing water with abundant cover in the form of aquatic vegetation (Ref. 44894). Occurs in creeks and lakes, usually among aquatic weeds. Feeds on insects, insect larvae and planktonic crustaceans (Ref. 5259, 44894). 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 (Ref. 44894).


IUCN Red List Status (Ref. 57073)	Threat to humans
Vulnerable (VU) (B1+2bc)	Harmless (Ref. 2906)

Human uses
Fisheries: of no interest; aquarium: commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
Biogeographic modelling \| E-book \| Field guide \| Length-frequency wizard \| Life-history tool \| Point map

Special reports
Check for Aquarium maintenance \| Check for Species Fact Sheets \| Check for Aquaculture Fact Sheets

Download XML
Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Medium, minimum population doubling time 1.4 - 4.4 years (Assuming Fec<10,000)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (12 of 100)	Not marketed/unknown

Entered by Palomares, Maria Lourdes D.

Modified by Ortañez, Auda Kareen

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Page last modified by : elaxamana, 15 July 2009

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