Die Varswater-harder (Myxus capensis) is 'n vis wat endemies aan Suid-Afrika is. Dit kom voor van Valsbaai tot by Kosibaai. In Engels staan die vis bekend as Freshwater mullet.
Die vis word 45 cm lank. Die vis is silwerkleurig wanneer dit in varswater is en word donker aan die bokant wanneer dit in soutwater (in die see) kom.
Die vis is meer volop in die Kaapse riviere as ander harderspesies en kan tot 100 km na die binneland voorkom. Die vis bly die grootste gedeelte van sy lewe in varswater en gaan net na die see om eiers te lê tussen Maart en November. Damme en keerwalle verhoed die natuurlike migrasie van die vis en het tot gevolg dat hulle getalle aan die afneem is.
Die Varswater-harder (Myxus capensis) is 'n vis wat endemies aan Suid-Afrika is. Dit kom voor van Valsbaai tot by Kosibaai. In Engels staan die vis bekend as Freshwater mullet.
The freshwater mullet (Pseudomyxus capensis) is a species of fish in the family Mugilidae. It is endemic to South Africa.
The freshwater mullet is endemic to South Africa where is distribution extends from Kwazulu-Natal, the Eastern Cape to the Western Cape, from Kosi Bay to the Breede River drainage.[1]
This species is found in estuaries and the juveniles need freshwater reaches for growth and safety. The adults spawn at sea, after reaching sexual maturity in estuaries.[1] The juveniles move into the estuaries and up into rivers in the late southern winter or early spring and then stay there for seven years for females and four years for males. They feed on benthic algae and small invertebrates over muddy substrates.[2]
The freshwater mullet's range and population have been impacted by the damming of streams and the introduction of alien fish.[1]
The freshwater mullet was previously assigned to Myxus, but genetic studies in 2012 found it to be more closely related to the Fringelip mullet than to the Sand grey mullet, necessitating the erection of the monospecific genus Pseudomyxus for this species.[3][4]
The freshwater mullet (Pseudomyxus capensis) is a species of fish in the family Mugilidae. It is endemic to South Africa.
Myxus capensis é uma espécie de peixe da família Mugilidae.
É endémica da África do Sul.[1]
Myxus capensis é uma espécie de peixe da família Mugilidae.
É endémica da África do Sul.
