Die Papierbek (Barbus mattozi) - ook bekend as silwervis- is 'n varswatervis wat in die Limpoporivier-stelsel, die Kunenerivier, en die Gwai- en Kwandosytakke van die Zambezirivier voorkom. In Engels staan die vis bekend as Papermouth.
Die vis is silwerkleurig met oranje vinne. Die vis het 'n groot bek met een of twee pare baarde om en word tot 400 mm lank. Die Suid-Afrikaanse hengelrekord is 1.355 kg en dié van Zimbabwe is 1.304 kg.
Die vis leef in groot poele van die koeler, standhoudende riviere en oorleef maklik in kunsmatige poele. Die vis is 'n roofvis; aanvanklik vreet hulle insekte en ongewerweldes en later, as hulle ongeveer 175 mm lank is, ander vissies. Hulle vreet ook waterleliesade. Die vis migreer stroomop met die eerste somervloed om te broei. Die vis kan 8 tot 9 jaar oud word en bereik volwassenheid na drie jaar. Hulle grootste vyande is voëls, otters, groot babers en ander groot papierpbekke.
Huidige navorsing toon aan dat die Limpopo- en Kunenespesies verskillende spesies is.
Die Papierbek (Barbus mattozi) - ook bekend as silwervis- is 'n varswatervis wat in die Limpoporivier-stelsel, die Kunenerivier, en die Gwai- en Kwandosytakke van die Zambezirivier voorkom. In Engels staan die vis bekend as Papermouth.
The papermouth (Enteromius mattozi), also known as the silverfish is a species of ray-finned fish in the genus Enteromius.
The papermouth has a silvery body with orange coloured fins.[2] The dorsal fin is serrated and its scales are marked with radial striations.[3] It grows to a maximum length of 40 cm and a weight of 1.4 kg.[4] The mouth is positioned terminally.[5] It has a protractile mouth.[3]
The papermouth is found in southern and central Africa from the Congo Basin through Angola south to the Limpopo, including the upper Zambezi. It can also be found in artificial impoundments in southern Africa.[4]
The papermouth is a benthopelagic, potamodromous fish which occurs naturally in the larger pools of perennial rivers, which are cooler than the shallows. It is common in artificial lakes such as reservoirs and farm dams and is often introduced into these. It is an actively predatory species, feeding on small planktonic crustaceans and insects when it is juvenile and preying on small fish when adult. It will also feed on the seeds of water lilies,[1] algae and aquatic plants.[6] In turn, the papermouth is a prey species for birds, otters, large catfish and larger conspecifics. After the first summer rains, the papermouth migrates upstream in the flooded rivers to spawn. This species matures at three years old[1] and the oldest recorded fish was 9 years old.[4]
The papermouth is and aggressive fish and this makes it a popular target for anglers and fly fishers[6] and is harvested for human consumption.[1] In some parts of its range it is thought to be declining,[6] but the IUCN class the species as being of "Least Concern", although they note that there are potential threats from pollution and overfishing.[1]
The name Barbus mattozi was originally applied to specimens taken from the Cuanza and Cunene in Angola and Namibia. The specimens taken in the Limpopo were named as Barbus rapax. The status of the papermouth in the Zambezi, where it is a rare species, is uncertain, the species has been widely introduced to dams in Zimbabwe and the specimens taken in the Zambezi may be escapes from these artificially stocked populations. Some authorities, therefore, consider that Enteromius mattozi and Enteromius rapax should be treated as separate species.[3]
The papermouth (Enteromius mattozi), also known as the silverfish is a species of ray-finned fish in the genus Enteromius.
Barbus mattozi es una especie de peces de la familia de los Cyprinidae en el orden de los Cypriniformes.
Los machos pueden llegar alcanzar los 40 cm de longitud total.[2][3]
Es un pez de agua dulce.
Se encuentra en el África Austral y central.
Barbus mattozi es una especie de peces de la familia de los Cyprinidae en el orden de los Cypriniformes.
Barbus mattozi Barbus generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.
Barbus mattozi Barbus generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.
