something in the water....
Closer inspection revealed spawning lamprey. The first time in my adult life that I had seen them. I counted about 8 of them. The upper photo shows the size of the 'scrape' that they had made. They were about 5" or 12.5cm long. Impressively one of them was fanning its tail end across the gravel, shifting the stones, preparing the spawning bed.
Lamprey were spotted on another stretch of the river some days later - on the Peacock Open Day in fact.
They belong to a primitive group of fish that have sucker-like mouths instead of teeth and jaws. As they mature they stop feeding and develop the sucker typical of a lamprey. Once the adults have spawned, they die. So having spent the first part of their lives hiding away in the mud of the river bed they emerge, spawn and die - apparently!
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