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Die Spikkel-kuilvissie (Nothobranchius orthonotus) is 'n varswatervis wat voorkom in riviere op die oostelike kusvlakte van Afrika vanaf die onderste gedeelte van die Zambezirivier tot by Mkuze in KwaZulu-Natal. In Engels staan die vis bekend as die Spotted killifish.
Die vis het 'n stewige lyf met die dorsale vin agter op die lyf, teenoor die anale vin. Beide vinne is omtrent ewe groot. Die stertvin is groot en bolrond terwyl die kop groot en met skubbe bedek is. Mannetjies het groter dorsale en anale vinne as die wyfies. Die vis word tot 100 mm lank.
Die wyfies is eenvoudig vlesig bruin met 'n ligte silwer of blouerige skynsel.
Die mannetjies het 'n rooi of blou voorkoms. By beide voorkomste is daar rooi spikkels op die kop. By die vis met die rooi voorkoms is die skubbe geel of blou in die middel met helder rooi rantjies. Die stert-, pektorale- en bekken vinne is rooi. Daar is rooi strepe op die basis van die dorsale en anale vinne; die vinne is groen met wynrooi kolle op die onderste helfte terwyl die rante van die vinne helder wit is.
By die vis met blou voorkoms is die rooi kleur minder opvallend en die skubbe met blou in die middel domineer. Die vinne is groen met klein rooi strepe en kolle. Die stertvin het feitlik geen kolle op nie.
Die Beira-kuilvissie lyk baie soos die vis met die rooi voorkoms en daar is 'n kans dat dit dieselfde spesie mag wees.
Die Spikkel-kuilvissie (Nothobranchius orthonotus) is 'n varswatervis wat voorkom in riviere op die oostelike kusvlakte van Afrika vanaf die onderste gedeelte van die Zambezirivier tot by Mkuze in KwaZulu-Natal. In Engels staan die vis bekend as die Spotted killifish.
The spotted killifish (Nothobranchius orthonotus) is a small, short lived species of fish, an African rivuline from the family Nothobranchiidae. These fish are native to many isolated freshwater pools located in the savannah depressions of east Africa, specifically Malawi, Mozambique, Zimbabwe, and South Africa.[1] This species of fish occurs in ephemeral waters and killifish eggs can survive long periods of dehydration. The word killifish likely comes from the Dutch kil for kill (small stream).[3]
The spotted killifish consumes both aquatic invertebrates and vertebrates, its diet consists mainly of juvenile lungfish (Protopterus annectens) and larval amphibia. In addition to these, this species also consumes a relatively high proportion of insect larvae from the orders Odonata, Coleoptera and Ephemeroptera. Diets such as these may be deemed as profitable for the trade-offs in item size and ease of catching.[4]
The spotted killifish, typically of the genus Nothobranchius, are adapted to annual desiccation of their habitat. The fishes hatch at the start of each rainy season, and continue to grow very quickly. Within a matter of a few weeks, these fish reach sexual maturity, and reproduce daily, with females laying up to 50 eggs each day. From here, the eggs are spawned into a layer of rock or soil beneath the surface of the ground, and remain there after the pool has dried up. Even with a dry environment, the embryos are able to exist in developmental suspension until the starts of the next wet season.[4]
Fish with the genus Nothobranchius show a striking level of sexual dichomatism, where the males portray bright colors, and the females are dull. The adult spotted killifish is one of the largest of its genus, and can grow up to 10 centimetres (3.9 in) in length.[4]
The spotted killifish is native to isolated freshwater pools located in the savannah depressions of east Africa, specifically Malawi, Mozambique, Zimbabwe, and South Africa. This species was found to share these pools with N. furzeri, N. kadleci and N.rachovii, all congeners. The natural environments inhabited can range from non-vegetated and shallow with cloudy water, all the way to densely overgrown pools, that are fairly deep and have clear water. This species may also be present in swamps intermittently connected to floodplains. Given the lifecycle of the spotted killifish, it has adapted to varying dry and wet weather conditions that persist in this part of the world. However, due to recent anti-malarial and tsetse fly spraying programs, the populations of spotted killifish are becoming threatened. Though this species is threatened, it is at lower risk, and not yet in need of acts of conservation given that the threats are localized.[2]
The spotted killifish was originally described in 1844 as Cyprinodon orthonotus by Wilhelm Peters with the type locality given as Quelimane in eastern Mozambique.[5] The specific name is derived from orthos meaning "straight" and notus meaning back, referring to the straight dorsal profile of this species.[6]
The spotted killifish (Nothobranchius orthonotus) is a small, short lived species of fish, an African rivuline from the family Nothobranchiidae. These fish are native to many isolated freshwater pools located in the savannah depressions of east Africa, specifically Malawi, Mozambique, Zimbabwe, and South Africa. This species of fish occurs in ephemeral waters and killifish eggs can survive long periods of dehydration. The word killifish likely comes from the Dutch kil for kill (small stream).
Nothobranchius orthonotus es una especie[3] de peces de agua dulce de la familia de los notobranquíidos en el orden de los ciprinodontiformes.[4]
Se usa para acuariofilia, estando regulado su comercio con este fin,[5] siendo muy difícil de mantener en acuario.[3]
La longitud máxima descrita es de 10 cm.[3]
Se distribuyen porn ríos de África: Malaui, Mozambique, Zimbabue y Sudáfrica,[3] donde sus poblaciones se ven amenazadas por la contaminación y por los programas de pulverización contra la malaria y la mosca tsetsé.[5]
Nothobranchius orthonotus es una especie de peces de agua dulce de la familia de los notobranquíidos en el orden de los ciprinodontiformes.
Se usa para acuariofilia, estando regulado su comercio con este fin, siendo muy difícil de mantener en acuario.
Nothobranchius orthonotus Nothobranchius generoko animalia da. Arrainen barruko Nothobranchiidae familian sailkatzen da.
Nothobranchius orthonotus Nothobranchius generoko animalia da. Arrainen barruko Nothobranchiidae familian sailkatzen da.
Nothobranchius orthonotus é uma espécie de peixe da família Aplocheilidae.
Pode ser encontrada nos seguintes países: Malawi, Moçambique e África do Sul.
Os seus habitats naturais são: marismas intermitentes de água doce.
Está ameaçada por perda de habitat.
Nothobranchius orthonotus é uma espécie de peixe da família Aplocheilidae.
Pode ser encontrada nos seguintes países: Malawi, Moçambique e África do Sul.
Os seus habitats naturais são: marismas intermitentes de água doce.
Está ameaçada por perda de habitat.
