How did the dorsal fin look? If the dorsal fin was beat-up and healed over (crooked fin, crooked rays, partially removed), its probably a hatchery fish. Growing up in a hatchery pond or raceway is always hard on the dorsal fin (other fins as well) and is usually a give-away if the fish is not clipped.

I've also caught hatchery fish that could be classified as 'the worst clip job ever'. I think these may be partially clipped fins that have regenerated. Like you, I let these go because I've heard of Gamies that interpret 'fully formed adipose fin' as 'any adipose fin'.

When fishing the native season, I have yet to catch and release a nate that didn't have a fully formed, undamaged adipose and dorsal fin.