Are adipose fins clipped on all stocked rainbow trout released in Idaho? I caught two trout in Lucky Peak Reservoir that had caudal and pectoral fin damage commonly associated with hatchery trout but both fish retained their adipose fins.
Greetings, thanks for your question about adipose-clipped trout!
Idaho Fish and Game does not typically adipose-clip hatchery rainbow trout. You may see some adipose-clipped hatchery trout in some waters (Salmon River near Stanley, for example), but they are not very common. The Department may adipose-clip trout when needed in certain circumstances or for a particular evaluation or study (stocked brown trout on the Boise River, for example).
The majority of hatchery trout are not typically adipose-clippped, so the trout you caught at Lucky Peak were probably typical hatchery trout.
Sportfishing Program Coordinator