In message , Chloe
writes
Anyone got any idea of any sites which would help identify various fish
types - like a "I-Spy book of fish" online with photos etc

I don't know any online resources, but Alwynne Wheeler's "Freshwater
Fishes Of Britain And Europe" is an excellent book, there are used
copies on Amazon from £1.60

http://tinyurl.com/4243d

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Steve Walker