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:
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Our weatherman Bob Crampton gives the lowdown on the higher temperatures the West Country is experiencing at the moment.
This afternoon is set to be breezy with lots of cloud - murky around the moors. Highs hitting 13 C. Staying dry with a very mild night
A cloudy, damp Monday. Still very mild with temperatures rising to 14 or 15 C midweek. More rain in parts later today