Pleasant Valley Fish Farm of McCook, NB is an approved supplier for fish imported into Montana. You will need an import permit from the Fish, Wildlife & Parks. In Billings I contacted Mike Ruggles Fisheries Biologist at 406.247.6181.
Currently I can only get a permit for Chanel-cats, I hope to get my fish the first week in May.
Pleasant Valley Fish Farm
Ask for Bill or Dale Hahle
Getting my fish in May did not work out but it looks like I will be getting some 6 inch cats now July 8th or 9th
Mike Ruggles phone number is 406 247-2963