The Allis shad (Alosa alosa) is a member of the herring family and enters freshwater only to spawn. Read more about this protected fish.
Appearance: Allis shad are very similar to twaite shad. They are members of the herring family and enter freshwater only to spawn. They have a silvery, flattened and typically fish-shaped body. A thin fatty membrane covers the front and rear parts of the eye, and the lower jaw fits into a notch in the upper jaw. They have a deeply forked tail with large scales at the base.
Unlike the twaite shad, the allis shad usually only has one dark spot behind the gill cover. On occasions they can have two spots here and its always best to check the anal fin ray count which is 25-26 on allis shad and 19-23 on twaite shad.
British record: 4lb 12oz 7 dms (British record committee 2015)
Lifespan: four to seven years
Last date edited: 24 December 2020