Some fish live in two different Delaware River, striped bass of habitats: Fresh and salt water. all ages, shad, and eels migrate DELAWARE SUSQUEHANNA RIVER American shad, herring, striped out to sea. Scientists tell us RIVER bass, and American eels do that. that these fish move when river These fish are found in the flows increase. They “ride the Stripers also do this until they Delaware River. American shad wave” made by rain in October become adults. and herring are also found in and November. Then, as they are swim- Pennsylvania’s section of the Unfortunately, they run into ming up the coast, they pass Susquehanna River. Shad, some hazards before reaching the different rivers where they herring, and striped bass are the sea. Dams slow their journey. were born. The fish born in anadromous (eh-nad-ro-muss) Scientists have conducted many that river break off from the fish. They are born in fresh water studies to find out how fish make school and move into fresh and grow up in the ocean. it through dams. On some dams, water. This is like your getting Adults return to fresh water to they make it through the off the school bus at your stop. lay eggs. Eels are born in salt turbines safely. Some turbines The adults move up those water and grow up in fresh are not so good for fish. These rivers and have their young. water. They are catadromous dams have ways to help fish Then, in the fall, the parade (cat-ad-ro-muss). around the turbines. happens all over again. When the leaves turn colors Once at sea, the fish travel Eels are a little different. and begin to fall, these groups in large schools, just as you do Young eels spend their time of fish begin their travels to the on school buses. The fish in in the Delaware River and its sea. It’s like a parade of fish these schools are from many tributaries. Each fall, the marching back to the ocean. On different rivers. They follow adults move out to sea to the Susquehanna, adult and warm water up and down the spawn. In the spring, young young American shad and Atlantic Coast. American shad eels migrate up the rivers their herring make the move. On the and herring do this for three parents came from. to five years until they are adults. This is the cycle of fish migration! American Eel Blueback Herring American Shad Striped Bass illustration-Ted Walke 48 Pennsylvania Angler & Boater FishingFishing && BoatingBoating MemoriesMemories LastLast AA LifetimeLifetime.