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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).
More on author: Richardson.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien; zoet water; brak water demersaal; anadroom (Ref. 51243). Subtropical; 34°S - 47°S (Ref. 26213)
Southwest Pacific: endemic to New Zealand.
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 8.6 cm FL mannelijk / geslacht onbekend; (Ref. 13730)
Migrates into estuaries and lower reaches of rivers during spring.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
McDowall, R.M., 1990. Freshwater fishes and fisheries of New Zealand -The angler's el dorado. Aquat. Sci. 2(2):281-341. (Ref. 11115)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang; aas: usually
Tools
Speciale rapporten
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.6406 [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): 3.2 ±0.2 se; based on diet studies.
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).