Rahway River migrations. Fish ladders are inundated structures with small underwater steps that allow fish to navigate around a dam and continue their migration. Other approaches include removing obstructions that are inoperative or no longer serve their purpose, or improving water quality and reducing debris that obstructs passage. The fish targeted for upstream passage at the Rahway River Water Supply Dam are alewife (Alosa pseudoharengus), blueback herring (Alosa aestivalis), gizzard shad (Dorosoma cepedianum), white perch (Morone Americana) and the endangered American eel (Anguilla rostrate). Alewife and blueback herring are collectively referred to as river herring due to their similarity in appearance, range,
Sea Fish Industry Authority Sea Fish Industry Authority The Sea Fish Industry Authority (or Seafish) is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. Established in 1981, and charged with working with the UK seafood industry to promote good quality, sustainable seafood. Seafish revised its mission in 2018. Its new mission is: "Seafood is the way Forward". Seafish was established in the United Kingdom under the Fisheries Act 1981 through the amalgamation of the Herring Industry Board (founded in 1934) and the White Fish Authority (founded in 1951). Seafish has its administrative base in