Environment Agency:
The amazing Twaite Shad is a herring which enters a river to reproduce each May, hence the local name of “May fish”. In fact it is said to be so predictable you could set your calendar by its arrival.
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Weirs such as the Diglis weir on the River Severn, cause problems for Shad as these fish don't leap
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Lamprey are eel-like creatures, once eaten by Vikings, regarded as a luxury food by monarchs and served poached in red wine by Romans.
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The smelt is a small species of fish, related to trout and salmon. They live in coastal areas of Britain, like this one found in the mouth of the river Thames
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The Spined loach spends most of its life in and around the silty bed of rivers, streams, drains and lakes. It can live in oxygen poor environments, spawning multiple times in a season to maximise the survival of its young.
Environment Agency:
One of the last adult vendace recorded in Bassenthwaite Lake
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Shad, like this one pictured have some rather unique characteristics
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Derwentwater, the last stronghold for vendace in England
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Arctic Char swimming in the River Liza
Environment Agency:
A Brook lamprey found in Kex Beck, Yorkshire