Opsaridium microlepis és una espècie de peix de la família dels ciprínids i de l'ordre dels cipriniformes.
Els mascles poden assolir els 47 cm de longitud total.[3][4]
És un endemisme del llac Malawi.[3]
Opsaridium microlepis és una espècie de peix de la família dels ciprínids i de l'ordre dels cipriniformes.
The lake salmon or mpasa (Opsaridium microlepis) is an African species of freshwater fish, endemic to Lake Malawi, in the family Cyprinidae found in Malawi, Mozambique, and Tanzania. Its natural habitats are rivers and freshwater lakes.[1][2]
It is a silvery fish which resembles trout of the family Salmonidae[3] and lacks the pink or orange coloured fins of many of its congeners. They can grow to up to 4 kg in weight[4] and 47 cm in total length[2] The larger adults are plain coloured while the juveniles have vertical dark bars along the body which they lose as they grow.[5]
The lake salmon occurs in the pelagic zone of Lake Malawi, over sandy substrates. The juvenile fish stay close inshore near the mouths of the tributary rivers. The adults feed on small pelagic fishes, especially Engraulicypris sardella,[2] while the juveniles feed on plankton, insects and other small organic matter. During the rainy season the adult fish migrate up the tributary rivers from the lake to spawn, this mainly takes place at night in shallow, well-oxygenated, flowing waters over gravel substrates with no silt. there is an extended spawning period which starts with the onset of the rains and continues after the rains,[1] from May to October. The young remain in the rivers until they have grown somewhat and are able to return to the lake.[5]
The lake salmon is threatened by overfishing and there are very high mortality rates in adult fish during the spawning season as the rivers are often totally blocked with weirs and with gill nets which prevent the fish from running upstream, especially during years of low rainfall. Other threats include deliberate poisoning and the deterioration of the spawning grounds due to siltation from soil erosion caused by deforestation and agriculture, which also causes habitat deterioration as water is abstracted from the breeding streams for irrigation and this makes it difficult for the juveniles to return to the lake from the spawning areas.[1] It is caught using ring nets and by angling.[2]
The Bua River runs through the Nkhotakota Wildlife Reserve in central Malawi and this is the only river where the spawning grounds are protected because the surrounding woodlands are protected from clearing. The headwaters of another spawning river, the North Rukuru, are protected within the Nyika National Park but there is increasing deforestation between the park and the spawning grounds. The Linthipe River is a major spawning river and it is unprotected being polluted with untreated sewage from the city of Lilongwe. The condition of the spawning rivers in Tanzania and Mozambique is not known.[1]
The lake salmon or mpasa (Opsaridium microlepis) is an African species of freshwater fish, endemic to Lake Malawi, in the family Cyprinidae found in Malawi, Mozambique, and Tanzania. Its natural habitats are rivers and freshwater lakes.
Opsaridium microlepis es una especie de peces de la familia de los Cyprinidae en el orden de los Cypriniformes.
Los machos pueden llegar alcanzar los 47 cm de longitud total.[2][3]
Es un pez de agua dulce.
Es un endemismo del lago Malawi.
Opsaridium microlepis es una especie de peces de la familia de los Cyprinidae en el orden de los Cypriniformes.
Opsaridium microlepis Opsaridium generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.
Opsaridium microlepis Opsaridium generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.
La truite lacustre (Opsaridium microlepis) est une espèce de poisson à nageoires rayonnées de la famille des Cyprinidés. On la trouve au Malawi, au Mozambique et en Tanzanie. Ses habitats naturels sont les rivières et les lacs d'eau douce.
La truite lacustre (Opsaridium microlepis) est une espèce de poisson à nageoires rayonnées de la famille des Cyprinidés. On la trouve au Malawi, au Mozambique et en Tanzanie. Ses habitats naturels sont les rivières et les lacs d'eau douce.
Opsaridium microlepis is een straalvinnige vissensoort uit de familie van de eigenlijke karpers (Cyprinidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1864 door Günther.
Bronnen, noten en/of referenties
Opsaridium microlepis é uma espécie de peixe actinopterígeo da família Cyprinidae.
Pode ser encontrada nos seguintes países: Malawi, Moçambique e Tanzânia.[2]
Os seus habitats naturais são: rios e lagos de água doce.[2]
Opsaridium microlepis é uma espécie de peixe actinopterígeo da família Cyprinidae.
Pode ser encontrada nos seguintes países: Malawi, Moçambique e Tanzânia.
Opsaridium microlepis là một loài cá vây tia trong họ Cyprinidae. Chúng được tìm thấy ở Malawi, Mozambique, and Tanzania.
Các môi trường sống tự nhiên của chúng là sông và hồ nước ngọt.
Bài viết về Họ Cá chép này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Opsaridium microlepis là một loài cá vây tia trong họ Cyprinidae. Chúng được tìm thấy ở Malawi, Mozambique, and Tanzania.
Các môi trường sống tự nhiên của chúng là sông và hồ nước ngọt.
小鱗馬口波魚（学名：Opsaridium microlepis）为輻鰭魚綱鯉形目鲤科的一個種，被IUCN列為瀕危保育類動物，分布於非洲馬拉威湖流域，為特有種，體長可達47公分，棲息在底層水域，可做為食用魚及觀賞魚。
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