A friend, who has a lot of resources and effort tied up in developing a collection of koi carp for sale and for breeding is taking devastating losses at night, most likely to otters. Mink being considered not large enough to take and eat 18" fish overnight...
How is he going to halt this damage...
Regards, andy
Be careful with traps. If you want to use the 330, it can severely damage your hand or arm, if not properly set.
After determining that they are, in fact, otter predators, just watch the pond for a day or two. Otters have schedules. I have used a .22 LR, and a .17 HMR to remove several otters. There have not been any for several years. Knock on wood.
Of course, adhere to your state hunting laws.
