| The
Tench is capable of growing up to about 50cm long. It was introduced
into the River Murray by acclimatisation societies in 1876 and
spread rapidly throughout the Murray Darling System. A small
population is thought to occur in the Onkaparinga River. Its
numbers reduced drastically in the 1970's when Carp (Cyprinus
carpio) became abundant. Other introduced fish pose a more serious
problem to native fishes than Tench. |
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