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> Ovalentaria/misc (Various families in series Ovalentaria) > Ambassidae (Asiatic glassfishes)
Etymology: Ambassis: Derived from Greek, anabasis = climbing up (Ref. 45335).
More on authors: Gilchrist & Thompson.

Environment: milieu / climate zone / depth range / distribution range Ecologie

marien; zoet water; brak water demersaal. Subtropical; 13°N - 39°S, 19°E - 52°E

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Western Indian Ocean: East coast from KwaZulu-Natal south to Algoa Bay in South Africa (Ref. 4318, 7248, 52193). Reported from east Africa (Ref. 4318), including Madagascar (Ref. 4180, 50956) and Mauritius (Ref. 50956).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: L_m 3.5 range ? - ? cm
Max length : 10.0 cm SL mannelijk / geslacht onbekend; (Ref. 52193)

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Dorsale stekels (totaal) : 8; Dorsale zachte stralen (totaal) : 9 - 11; Anale stekels: 3; Anale zachte stralen: 9 - 11. Diagnosis: Ambassis natalensis has following combination of characters: supraorbital spines 1-4; rostral spine absent; rear margin of preopercle entirely serrate; preopercle ridge smooth except for 1-5 tiny spines at rear corner; interopercle smooth or with 1-4 tiny serrae at angle; two rows of cheek scales; predorsal scales 9-11; lateral line continuous; lower gill rakers 19-22; pectoral-fin rays 14-15; teeth on vomer and palatines in 2-3 rows (Ref. 50956).

Tolerant of freshwater within a temperature range of 19-27°C (Ref. 4180, 52193, 79840). In summer, it feeds mainly in early evening and late morning while in winter, it feeds both day and night on crustaceans as well as insects (aquatic and terrestrial) and fish (Ref. 7248, 52193). Excellent subject for biological research as it easily thrives in captivity (Ref. 12484).

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Maugé, L.A., 1986. Ambassidae. p. 297-298. 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. 4180)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Niet bedreigd (LC) ; Date assessed: 12 February 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

Visserij: van geen belang; Aquarium: Commercieel; aas: usually

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Estimates based on models

Preferred temperature (Ref. 123201): 23.9 - 27.6, mean 26.7 °C (based on 82 cells).

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01413 (0.00728 - 0.02742), b=3.02 (2.85 - 3.19), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trofisch niveau (Ref. 69278): 3.4 ±0.59 se; based on food items.

Weerstandsvermogen (Ref. 120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Assuming Fec > 10,000).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Ambassis natalensis Gilchrist & Thompson, 1908