The Cold Spring Harbor Fish Hatchery and Aquarium celebrates its Fall Fair from 10 a.m. to 4:30 p.m. Sept. 24. (Rain date is Oct. 1.)

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There will be exhibits by environmental groups as well as children’s games, music and more. The Hatchery’s two aquarium buildings will be open to tour, and there’s fishing for trout by kids 12 years of age and younger with all gear provided. Admission is $6 per adult, $4 for kids ages 3 to 12 and people 65 and older. Kids younger than 3 are free.

The fish hatchery is at 1660 Rte. 25A in Cold Spring Harbor. For more information, call 516-692-6768 or visit cshfha.org.