The Andy Griffith Show S07 E11 Big Fish in a Small Town

"Nip it in the bud!"

When Howard goes fishing with Andy, Opie, Goober, and Floyd, he catches the legandary rare carp "Old Sam". After he decides to put the legendary fish in a Raleigh museum, Howard learns a lesson from Opie that "Old Sam" is such an important part of the town's history that he brings the fish back to lakes surrounding Mayberry.