Announcing Antonelli’s Cheese Shop’s New Fish Line: Conservas. What are conservas? In Spanish, conservas refers to foods that are preserved in cans or jars and typically refers to tinned fish and seafood. Without further ado, Antonelli’s is excited to announce that they’ve launched their Conservas tinned fish line. When purchasing online for pickup or delivery, look for the “fish” heading at the top of their online site.