[color=#006600]jericho[/color] wrote:
Hi
I'm looking for any information from our experts please. Are the barbel we catch indemnic to SA waters or are they catfish. If they are, can you tell me how many species can be found.
The short answer here is yes and no. Barbels (catfish) are some of the most widespread fish and comprise more than 2200 species described worldwide. Of the 31 families of catfish, two are predominantly marine and are also represented in South Africa. Of the freshwater species, 18 occur in South Africa i.e. are indigenous with a few species being endemic (occur only withinour borders.) The groups in South Africa are representative of the
rock catfishes, mountain catfishes, butter catfish (one specie)
squeakers and suckermouths and
air-breathing catfishes. Except for two species of rock catfish that are endemic to the Clanwilliam/Olifants system in the Western Cape, all other species are native to KZN and the river systems from the Vaal/Orange and north.
The most common barbel caught by anglers is the sharptooth catfish (
Clarias gariepinus) which occurs throughout southern Africa from the Vaal/Orange to the north. It may reach a length of 1,4m and may reach a weight in excess of 50kg, although the SA angling record is around 33kg. It is one of three indigenous species belonging to the air-breathing group which has the most potential for becoming invasive in other river systems and indeed, as
Ryan points out, has become an ivasive problem in some rivers of the Western Cape.
The vundu (
Heterobranchus longifilus) of the Zambesi is not indigenous to SA and is the largest barbel of Africa and has been recorded at 1,5m and 55kg.