Springwatch: Dr Mark Everard champions the minnow

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Dr Mark Everard is a fresh water biologist and champion of the smaller fish to be found in Britain's rivers. Species like minnows, sticklebacks and bullheads provide a vital indication to the health of our waterways.

Speaking on BBC Springwatch the avid fisherman and author from Great Somerford, Wiltshire, said: "Small fish are the lifeblood of the UK's waterways. If they do well, everything above them in eco-system does well.

"Lots of minnows mean a healthy river as they rely on good water conditions and this implies good quality water for housing, farming and other human interaction, in addition to supporting other wildlife.

Dr Everard has worked in five continents on environmental and human development issues, specialising in the water environment.

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