Twaite Shad Alosa fallax

Alosa fallax is a member of the herring family. It is a planktivorous fish with silvery white sides and a deep blue colouration on its back. Like other shads its upper jaw is distinctly notched in the mid line and the gill cover has distinct radiating ridges. Image: Hans Hillewaert (Flickr).

Find out more: iNaturalist, Marine Life Information Centre