Bluefin notho
📖 Overview
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 . Littoral vegetation usually consists of grasses; aquatic vegetation may consis of Nymphea, Ottelia, Lagarosiphon and Utricularia species; occasionally, the swamps are used by local inhabitants to cultivate rice . Very difficult to maintain in aquarium .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 0; Dorsal soft rays (total): 15 - 17; Anal spines: 0; Anal soft rays: 15 - 18. Diagnosis: Nothobranchius rachovii 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 . It can be distinguished from the other species of the subgenus Nothobranchius as follows: from N. furzeri 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 N. orthonotus 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 N. kadleci 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 . 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 N. furzeri and N. kadleci or frequent presence of brown spots on body and fins in N. orthonotus . Nothobranchius rachovii can also be distinguished from all other species of the genus by its low number of diploid chromosomes, 2n=16 . : fusiform / normal.
🌀 Behaviour
Behavioural data for Bluefin notho is currently being reviewed.
🦐 Diet
🥚 Reproduction
Annual fish. Matures after 12 weeks. This updates previous information from Ref. 1672.
🌍 Habitat & Distribution
Freshwater; benthopelagic; pH range: 6.0 - 7.0; dH range: 4 - 6; non-migratory. Tropical; 20°C - 24°C ; 19°S - 20°S
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect Bluefin notho.
🔍 Similar Species
👥 Community & Contribute
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