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Centrarchiformes (Basses) >
Percichthyidae (Temperate perches)
Etymology: Nannatherina: Latin, nannus = small + Greek, atherina, the Greek name for the eperlane; 1770 (Ref. 45335).
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water benthopelagisch; pH range: 6.0 - 6.5; dH range: 5 - 10. Temperate; 15°C - 30°C (Ref. 2060); 31°S - 34°S
Oceania: coastal drainages of southwest Australia between Two People Bay (near Albany) and the Blackwood River. Also reported from the Goodga River to Gin Gin Brook, western Australia (Ref. 7300).
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm 5.7 range ? - ? cm
Max length : 9.0 cm SL mannelijk / geslacht onbekend; (Ref. 44894); 9.0 cm TL (female); common length : 6.0 cm SL mannelijk / geslacht onbekend; (Ref. 44894); max. gerapporteerde leeftijd: 3.00 Jaren (Ref. 41789)
Is the rarest of all the endemic freshwater fishes of southwestern Australia. Inhabits coastal streams, lakes, ponds and swamps, where the water is dark and acidic (pH as low as 3.0) and has a large seasonal fluctuation in temperature (11-30°C) (Ref. 27892, 44894). Favors shallow water and is commonly found in association with tall sedge thickets (Ref. 44894). Larva feeds mainly on cladocerans, copepods and dipteran larvae, while juveniles and adults ingest mostly terrestrial fauna (Ref. 6398, 44894). Breeds in the middle of winter in response to flooding. Female lays between 500-1600 eggs each. The majority of adult perishes shortly after spawning at the end of their first year (Ref. 44894). Both male and female attain sexual maturity at the end of their first year of life when they have attained an average TL of 6.0 and 6.3 cm respectively (Ref. 27892). Co-occurs with Edelia vittata over part of its range, but is generally more scarce (Ref. 5259, 44894). Aquarium conditions: pH=7.2, H=8, 24°C water temperature, rock and plant cover, carnivore, peaceful community fish, egg layer (Ref. 6398).
Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley, 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p. (Ref. 7300)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Bedreigd (EN) (B2ab(i,ii,iii,iv)); Date assessed: 09 January 2019
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang; Aquarium: Commercieel
Tools
Speciale rapporten
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 4.1 ±0.1 se; based on diet studies.
Weerstandsvermogen (Ref.
120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (tm=1; K=1.31-1.69; Tmax=3; mean Fec=1243;).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
![Image of Nannatherina balstoni (Balston\](/images/thumbnails/gif/tn_PERCICT0.gif "Image of Nannatherina balstoni (Balston\")
