(HARRINGTON, Del) – From the livestock shows, to the rides of the midway, the Delaware State Fair has been exciting families for decades. Families like the Wheeler family, where grandmother Mary, mother, Shannon and daughter Mercy. Shannon tells WMDT, “The last six years. I’m not kidding. You. She’s gotten a goldfish. She’s one. And miraculously, they’re still alive, you know? So every it’s like a tradition every year now we try to get a goldfis…