Nothobranchius rachovii
Diagnosis
Diagnosis_Genus: The genus Nothobranchius represents a group of small fishes that inhabit temporary savannah pools in Eastern Africa. The genus currently comprises 57 valid species (Dorn et al. 2011), distributed from southern Sudan to KwaZulu Natal in South Africa. All Nothobranchius species are sexually dimorphic, with larger colourful males and smaller drab females.
Body_male_length: 6 cm
Body_female_length: 4 cm
Etymology
Nothobranchius: Greek, nothos = false + Greek, brangchia = gill
Ecology
Substrate: water
Sociability_adults_male: solitary
Salinity: freshwater
pH: 6-7.5
Temperature: 19-24°C (22°C for the sexual reproduction)
Life cycle
All Nothobranchius species are annual; the adults die when the habitat dries out and the next generation survives in the form of desiccation-resistant eggs encased in dry mud during 6 to 8 months. The eggs hatch after the onset of the rainy season, develop and grow rapidly, and can reach sexual maturity at only three weeks (Genade et al., 2005; Valdesalici and Cellerino, 2003).
Reproduction_mode: sexual (Oviparous)
Generation: 3-12 months (seasonal species)
Resting_stage: eggs
Feeding behaviour
Mode of locomotion
Reference(s)
Attached phylogeny
Observation site(s)
SYMBIONTS
Association with... | Region origin | Name of site | In reference... |
---|---|---|---|
Piscinoodinium pillulare | (2007) |