The dorsal fin is frayed on a hatchery fish and must be smaller than the size of a credit card to be considered a Hatchery. I have been informed that the dorsal becomes frayed when the fish are raised as juveniles in cement holding tanks and they rub against the side of the tank. I don't know if that is true or not but I do know that a true Native fish has a beautiful dorsal fin and adipose. Those fish in the picture appear to be net caught.