Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Plans to eradicate a non-native species of fish by poisoning a north London brook have led to residents voicing concerns the move is an "experiment".

Fears over plans to poison fish in Enfield brook