The coloration suggests native, but if planted and it survived, its coloration will have changed from dull silver or grayish (to match the cement pond in which it was raised) to bright, and its diet will have changed as well.
Some states’ DFW clip the adipose aka trout fin, some don’t.
Another way to know is the flesh: native is pink and planted is white. But since that’s mostly attributable to diet differences between native and stocking food supplies, and if it has survived in the wild for a whole, that will have changed also, albeit more slowly.
Finally, I’ve seen planted fish swarm to the shores when people approached… feeding time.
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The coloration suggests native, but if planted and it survived, its coloration will have changed from dull silver or grayish (to match the cement pond in which it was raised) to bright, and its diet will have changed as well.
Some states’ DFW clip the adipose aka trout fin, some don’t.
Another way to know is the flesh: native is pink and planted is white. But since that’s mostly attributable to diet differences between native and stocking food supplies, and if it has survived in the wild for a whole, that will have changed also, albeit more slowly.
Finally, I’ve seen planted fish swarm to the shores when people approached… feeding time.