Distribution
The common roach is found throughout Europe except for the area around the Mediterranean and its distribution reaches eastward into Siberia. In Eastern Europe and Asia there are several subspecies, some with an anadromous lifecycle living around the Caspian and Black Sea. Around the Mediterranean and in northwestern part of Spain and Portugal several closely related species occur with no overlap in their distribution.
It was introduced in Australia in the Murry River and coastal drainages of southern New South Wales and Victoria from Europe during the 1860s and 1880s for sport purposes.
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