|
Nothobranchius Derhami
''Nothobranchius'' is a genus of small, freshwater killifish, classified in the family Nothobranchiidaevan der Laan, R., Eschmeyer, W.N. & Fricke, R. (2014)Family-group names of Recent fishes.''Zootaxa, 3882 (2): 1–230.'' in the order Cyprinodontiformes. There are about a hundred species in the genus, many with very small distributions. They are primarily native to East Africa from Sudan to northern South Africa, whereas a dozen species are found in the upper Congo River Basin; the greatest species richness is in Tanzania. ''Nothobranchius'' typically inhabit ephemeral pools that are filled only during the monsoon season, and show extreme life-history adaptations to survive the dry season. When their habitats dry up, the adult fish die and the eggs survive encased in the clay during the dry season. The embryos survive the dry season by entering diapause, facilitated by their specialized eggs that have a very hard chorion and are resistant to desiccation and hypoxia.Alexander Do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nothobranchius Rachovii
''Nothobranchius rachovii'', the bluefin notho, is a species of freshwater annual killifish from Mozambique. It can grow up to 6 cm (2.4").Mongabay â€Rainbow Nothobranch Accessed 23 January 2010. It is popular among killifish enthusiasts, who raise them from eggs in aquaria. Description Aside from the typical orange and blue variant, there is ''Nothobranchius rachovii KNP Black'', which has much darker colors, and was collected from the wild in Kruger National Park, South Africa in 1984, and ''Nothobranchius rachovii var. Red'', which has a red head with turquoise highlights. The females of all varieties are more neutrally colored. This shows sexual dimorphism among these fish. Distribution ''Nothobranchius rachovii'' ''sensu stricto'' is found in the floodplain of the lower Zambezi and also in the floodplain of the Pungwe River. Diet ''N. rachovii'' are benthopelagic, feeding on zooplankton and other small organisms living at the bottom of the water (benthos). Habit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
