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Osmeriformes (Freshwater smelts) >
Retropinnidae (New Zealand smelts) > Retropinninae
Etymology: Retropinna: Latin, retro = backwards, on the back side + Latin, pinna = thorn (Ref. 45335).
Eponymy: Dr Richard Wolfgang Semon (1859–1918) was a German embryologist, evolutionary biologist and physiologist. [...] (Ref. 128868), visit book page.
More on author: Weber.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten; brackvatten pelagiska; flodvandrande (Ref. 51243). Temperate; 10°C - 25°C (Ref. 2059)
Oceania: Australia's east coast from the Fritzroy River southward to at least the Shoalhaven River; throughout most of the Murray-Darling river system; and in Lake Eyre inland drainage system near Longreach, Thompson River.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 7.0  range ? - ? cm
Max length : 10.0 cm TL hane/ej könsbestämd; (Ref. 5259); common length : 6.0 cm TL hane/ej könsbestämd; (Ref. 5259); rapporterad maxålder: 2.00 år (Ref. 4851)
Lives in streams, backwaters, lakes, swamps and estuaries. Occurs in brackish estuaries and inland salt lakes. Most common in slow-flowing streams and still waters, shoaling near the surface or around the cover of aquatic plants and woody debris. Forms large aggregations in open water (Ref. 44894). Feeds on aquatic insects, microcrustaceans and algae. Spawns throughout the Murray-Darling river system. Breeds between July and March (mostly in spring) (Ref. 44894). Spawning temperature is about 15 °C. Newly hatched larvae measure 4.8 mm TL on the average. Eggs are laid among aquatic vegetation and hatch in about 10 days. Sexual maturity is attained by the end of the first year (Ref. 44894). Eaten fresh or canned.
Lake, J.S., 1971. Freshwater fishes and rivers of Australia. Thomas Nelson Ltd., Australia. 61 p. (Ref. 4850)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: kommersiell
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.6406 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
Trofisk nivå (Ref. 69278) |
2.8 ±0.29 se; based on food items. |
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Generation time |
3.6 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies. |
Resiliens (Ref. 120179) |
Hög, lägsta populationsfördubblingstid mindre än 15 månader (K=0.31; tm=1; tmax=2). |
Sårbarhet i fisket (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |
Priskategori (Ref. 80766) |
Unknown.
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