The Environment Agency is having to rescue hundreds of fish put in danger when flood waters carried them off course.
The operation is taking place at Upton Upon Severn in Worcestershire.
The fish, including bream and carp, wouldn't survive without help from the Agency and local anglers.
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Those who turned up late were turned away and told they weren't allowed to see their own children's carol concert.
The lights cost £6,000 to put up but the rest of the street donates money to charity in return.
They're campaigning against a reduction in the number of firefighters and cuts to service cover at night.