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Mugiliformes (Mullets) >
Mugilidae (Mullets)
Etymology: Pseudomyxus: Name from the genus Myxus preceeded by Greek prefix 'pseudo' meaning 'false'.
More on author: Valenciennes.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina; sötvatten; brackvatten bottenlevande; katadrom (Ref. 51243). Subtropical; 25°S - 35°S
Africa: endemic to South Africa, in east coastal estuaries and rivers from the Breë River to Kosi Bay (Ref. 7248, 52193).
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 23.0  range ? - ? cm
Max length : 45.0 cm FL hane/ej könsbestämd; (Ref. 52193)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 5; Mjukstrålar i ryggfenan (totalt) : 8; Taggstrålar i analfenan: 3; Mjukstrålar i analfenan: 9.
Body shape (shape guide): fusiform / normal.
Adults occur in freshwater to estuarine conditions. Adults breed at sea, throughout the year; juveniles move into estuaries and enter rivers usually in late winter or early spring (Ref. 52193). Females remain in freshwater for 7 years, males for 4 years (Ref. 52193). Return to estuaries before maturing sexually prior to spawning (Ref. 52193). Oviparous, eggs are pelagic and non-adhesive (Ref. 205). Feed on benthic algae and small invertebrates over muddy bottom (Ref. 6465). Decline in population from obstruction, by dams and weirs, of free passage into rivers.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Breed at the sea throughout the year. Juveniles move into estuaries and enter rivers usually in late winter or early spring. Males remain in freshwater until 4 years, females for up to 7 years. Fish return first to estuaries before maturing sexually prior to spawning (Ref. 7248).
Thomson, J.M., 1986. Mugilidae. p. 344-349. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels, MRAC; Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3573)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: kommersiell; Akvarium: Kommersiell
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 15.3 - 24.9, mean 22.6 °C (based on 20 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00665 - 0.02075), b=2.97 (2.83 - 3.11), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisk nivå (Ref.
69278): 2.8 ±0.27 se; based on food items.
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Moderate vulnerability (40 of 100).
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