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Clupeiformes (Herrings) >
Clupeidae (Herrings, shads, sardines, menhadens)
Etymology: Potamalosa: Greek, potamos = river + Latin, alausa = a fish cited by Ausonius and Latin, halec = pickle, dealing with the Greek word hals = salt; it is also the old Saxon name for shad = "alli" ; 1591 (Ref. 45335).
Eponymy: This is a toponym referring to Richmond River, New South Wales, Australia, the type locality. (Ref. 128868), visit book page.
More on author: Macleay.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina; sötvatten; brackvatten pelagic-neritic; katadrom (Ref. 138269). Temperate; 32°S - 39°S, 139°E - 151°E (Ref. 188)
Oceania: Endemic to southeastern Australia.
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 32.0 cm SL hane/ej könsbestämd; (Ref. 44894); common length : 15.0 cm SL hane/ej könsbestämd; (Ref. 44894); rapporterad maxålder: 11 år (Ref. 6996)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 12 - 18; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 16 - 27. Body fairly elongate, belly keeled, with 16 to 18 + 14 or 15 scutes; about 14 dorsal scutes with low keel from head to dorsal fin origin. Minute or no teeth in jaws; second supra-maxilla slender. Branchiostegal rays 8. Anal fin origin far behind dorsal fin base. Juveniles resemble Hyperlophus, which has a deeper second supra-maxilla, only 4 branchiostegal rays and i 6 pelvic fin rays.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Adults occur in clear, moderately fast-flowing streams, as well as in quiet backwaters, estuaries, and in the sea ( Ref. 5259, 44894). Also found in sluggish lowland rivers (Ref. 44894). A schooling species and appears diadromous. A fast swimming, shoal-forming species. Nothing much is known of its biology, although it may have a catadromous life cycle. Downstream migration to estuaries, presumably for spawning, has been reported in winter months (July-August). They feed on worms, small crustaceans and insects (Ref. 44894). Breeding occurs in estuaries from July to August. Taken in nets during the spawning season; will also take bait.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Whitehead, P.J.P., 1985. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: husbehovsfiske
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00325 - 0.00809), b=3.23 (3.09 - 3.37), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.3 ±0.43 se; based on food items.
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (K=0.13; tmax=11).
Sårbarhet i fisket (Ref.
59153): Low to moderate vulnerability (29 of 100).
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