He has visited the Aquarium Co-op several times since it opened and has bought fish food, shrimp and a pair of goby fish. “I go there even if I’m not going to buy anything,” Parke said.

He opened Aquarium Co-op at 9661 Firdale Ave. in March. The roughly 900-square-foot specialty freshwater fish store aims to promote quality bred fish and plants while saving resources through ...