Round 1: Tossup 5

A system named for these animals in Utrecht functions by giving users the ability to press a doorbell when they are present. (15[1])Migration of these animals is termed anadromous or catadromous. At Brewarrina, Aboriginal Australians built a set of prehistoric “traps” for these animals that were damaged by a weir in the 1970s. UNCLOS established EEZs to resolve conflicts over these animals (-5[1])between the (*) UK and Iceland. (10[2])Raceways and circular cages are used to farm these animals. (0[1])Ladders designed for these animals allow them to bypass dams when migrating. (10[1])For 10 points, name these animals that travel in schools to lay eggs, such as mackerel. ■END■

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