The Environment Agency is patrolling the River Severn to watch out for elver poachers.
They're using boats with special imaging equipment so they can see in the dark. Other officers patrol the banks.
The baby eels are a delicacy in the Far East and can command a high price, but fishing is strictly controlled. Anyone doing it without a permit can be prosecuted.
Bill Burleigh is an Environment Agency Fisheries Officer:
More top news
15-year-old Charlotte was killed on a beach in India in 2008. Two men are on trial but her mother says she's unsure justice will be done.
Visitors hoping to see the Man Engine tomorrow in Truro are being warned to get there early amid concerns of travel problems in the city.
Savannah Nicholls has cerebral palsy and severe epilepsy after complications from a bone marrow transplant.