Allis Shad Alosa alosa
The Allis Shad (Alosa alosa) is a large, herring-like migratory fish that spends most of its life at sea before ascending rivers to spawn in clean, fast-flowing reaches over gravel beds. Once widespread in British estuaries and rivers, it has declined severely due to river barriers, deteriorating water quality, and overfishing. It is now one of Britain’s rarest fish. Suffolk’s estuaries – particularly the Stour and Orwell – fall within the historical range of this species, and improved water quality and fish pass installation could support occasional passage. Any verified record from Suffolk waters would be of considerable significance. Image: © João Lima, iNaturalist.
Find out more: iNaturalist, Marine Life Information Centre
Suffolk’s Priority Marine Life Species
Key
Listed as a conservation priority in Suffolk’s Biodiversity Action Plan.
Closely associated with Suffolk’s landscape and natural identity.
Identified as a key priority for recovery under Suffolk’s Local Nature Recovery Strategy.
Has a Species of the Month article attached.
