AN OTTER chasing a vampire fish has been captured on video at the Diglis Fish Pass.
The video shows the sea lamprey (or vampire fish) swimming away from a large otter in front of the viewing window.
The Diglis Fish Pass contains a room below the River Severn, with a large viewing window where fish can be seen making their way upstream.
READ MORE: Twait shad captured swimming past Diglis Fish Pass window
Two cameras are stationed in the viewing room, which both monitor every fish which passes through.
The viewing window is illuminated with a backlight so that the cameras can detect fish at all times of the day.
Fish that can be seen at the window include twait shad, dace, lampreys (or vampire fish), pike and even salmon.
READ MORE: Take a look inside the Diglis Fish Pass
The purpose of a fish pass is to allow fish to move past manmade blockages in water.
In Diglis, the weir means that many fish looking to travel upstream struggle due to the two-metre separation.
The pass consists of 11 small pools, each just 20 cm higher than the last, making it more manageable for the fish to swim through.
The Diglis Fish Pass relies on volunteer staff who provide tours that can be booked via the Unlocking the Severn website.
The tickets are free but are very popular. For more information visit www.unlockingthesevern.co.uk/diglis-island-fish-pass-tours/.
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