Actinopteri (ray-finned fishes) > Ovalentaria/misc
(Various families in series Ovalentaria) > Ambassidae
Etymology: Ambassis: Derived from Greek, anabasis = climbing up (Ref. 45335).
More on authors: Gilchrist & Thompson.
Environment: milieu / climate zone / depth range / distribution range
Marine; freshwater; brackish; demersal. Subtropical; 13°N - 39°S, 19°E - 52°E
Western Indian Ocean: Natal to Algoa Bay in South Africa (Ref. 7248). Reported from east Africa (Ref. 4318), including Madagascar (Ref. 4180).
Length at first maturity / Size / Weight / Age
Maturity: Lm 3.5  range ? - ? cm
Max length : 9.0 cm SL male/unsexed; (Ref. 7248)
Tolerant of freshwater within a temperature range of 19-27°C (Ref. 4180, 79840). In summer, 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). Excellent subject for biological research as it easily thrives in captivity (Ref. 12484).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: of no interest; aquarium: commercial; bait: usually
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 23.9 - 27.6, mean 26.7 °C (based on 82 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00734 - 0.02718), b=3.01 (2.84 - 3.18), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.59 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Assuming Fec > 10,000).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).