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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobiinae
Eponymy: Dr John Frederick Croil Morgans was a research assistant at the Zoology Department of the University of Cape Town. [...] (Ref. 128868), visit book page.
More on author: Smith.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina; sötvatten; brackvatten bottenlevande; amfidrom (Ref. 46888); djupintervall 1 - 16 m (Ref. 28077). Subtropical; 25°S - 31°S
Africa: coastal lakes and estuaries in KwaZulu-Natal, South Africa, and southern Mozambique (Ref. 2798, 52193); also recorded from Madagascar (Ref. 4343).
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 3.0  range ? - ? cm
Max length : 6.4 cm TL hane/ej könsbestämd; (Ref. 52193)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 6; Mjukstrålar i ryggfenan (totalt) : 11 - 12; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 12.
Body shape (shape guide): elongated.
Lives in burrows excavated in clean sand, often in association with the sandprawn Callianassa kraussi (Ref. 52193). Restricted to sandy, quiet water areas and is unable to form burrows where the substrate is disturbed by water movements, is muddy or consists of sand with a particle diameter > 0.5 mm (Ref. 28077). Food consists of slow moving benthic organisms like chironomid larvae, gastropods, bivalves and amphipods (Ref. 28077). Breeds throughout summer, males are territorial (Ref. 52193). On exposed shores, they occur deeper than 3.5 m (Ref. 28077, 2798). Occasionally intertidal.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Skelton, P.H., 2001. A complete guide to the freshwater fishes of southern Africa. Cape Town (South Africa): Struik Publishers, 395 p. (Ref. 52193)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 23.6 - 25.1, mean 24.9 °C (based on 35 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00347 - 0.01582), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.3 ±0.45 se; based on food items.
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Low vulnerability (10 of 100).
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