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Common name (e.g. trout)
Genus + Species (e.g. Gadus morhua)
Stamps, Coins Misc.
Actinopterygii (ray-finned fishes) >
(Rivulines, killifishes and live bearers) >
Greek, nothos = false + Greek, brangchia = gill (Ref.
Named in honour of Arthur Rachow (Ref.
. More on author:
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; pH range: 6.0 - 7.0; dH range: 4 - 6; non-migratory. Tropical; 20°C - 24°C (Ref.
); 19°S - 20°S
Africa: temporary pools and swamps or water-filled depressions in the lowland floodplains of the lower Pungwe River and lower Zambezi River (Ref.
), probably also in floodplains of other rivers between Pungwe and Zambezi River (Ref.
Size / Weight / Age
range ? - ? cm
Max length : 6.0 cm TL male/unsexed; (Ref.
: 15 - 18. Diagnosis:
is distinguished from other species of the genus by the following combination of characters: in males, a bright colouration consisting of alternating light blue and orange-red bars on the body and fins, orange-red head, and orange subterminal and black terminal bands in the caudal fin (Ref.
). It can be distinguished from the other species of the subgenus
as follows: from
by male colouration, higher number of dorsal fin rays, 15-17 vs. 14-15, and a lower number of scales on the mid-longitudinal series, 26-28 vs. 28-30; from
by male colouration, lower number of scales on the mid-longitudinal series, 26-28 vs. 28-33, and shape of the dorsal profile, convex vs. flat; and from
by male colouration and shape of the frontal region, higher number of dorsal and anal fin rays, 15-17 vs. 13-14 and 15-17 vs. 13-14 (Ref.
). Females can be distinguished by the presence of a reflective light blue spot on all scales of the flanks, vs. few, irregularly dispersed light blue-green spots in
or frequent presence of brown spots on body and fins in
can also be distinguished from all other species of the genus by its low number of diploid chromosomes, 2n=16 (Ref.
Found in water-filled depressions in the floodplains of rivers; water depth is variable and decreases as the dry season progresses, eventually drying out completely (Ref.
). Littoral vegetation usually consists of grasses; aquatic vegetation may consis of
species; occasionally, the swamps are used by local inhabitants to cultivate rice (Ref.
). Very difficult to maintain in aquarium (Ref.
Life cycle and mating behavior
Annual fish. Matures after 12 weeks. This updates previous information from Ref. 1672.
Shidlovskiy, K.M., B.R. Watters and R.H. Wildekamp
, 2010. Notes on the annual killifish species
(Cyprinodontiformes; Nothobranchiidae) with the description of two new species. Zootaxa 2724:37-57. (Ref.
IUCN Red List Status (Ref.
Least Concern (LC)
; Date assessed:
01 March 2007