The illegal introduction of Clarias gariepinus for aquaculture purposes into the river threatened which indigeous fish species?
A
Dog fish
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B
Sword fish
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C
Cat fish
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D
Ray fish
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Solution
The correct option is C Cat fish When alien species are introduced they can turn invasive and cause decline or extinction of indigenous species.
For example – The illegal introduction of African cat fish (Clarias gariepinus) for aquaculture purposes into the river has threatened indigenous cat fishes.