Reddit mentions of Bison Minis (Soft Jerky) by Wild Meadow Farms - U.S.A. Made and Sourced All-Natural Dog Treats (3.5 oz)

Here are some links for ease :)

Laske Kronch (Ingredients: Salmon (min 85%), Fish Meal.)

Go Fish by Polkadog Bakery (Tilapia, brown rice and potato flour)

Carnivore Kisses - Alaskan Salmon by Stella and Chewy (100% Wild Alaskan Salmon Treats – Salmon)

Freeze Dried Salmon Treats by Bravo! (Salmon)

Freeze Dried Whitefish by Grandma Lucy's (USDA Pollock Filets)

Freeze Dried fish bites by Le Dogue (Freeze-dried fish)

Just in case you want to branch out, here are some other ideas for novel protein treats

Bison Jerky bits by Wild Meadow (U.S.A. Free-range Bison, All-natural Vegetable Glycerin, Potassium Sorbate (preservative)) - Comes in Duck as well

Simply Lamb by Sojos (lamb)

Buffalo Training Treats by Bravo! (Buffalo Heart)

Lamb Liver Treats by Primal (Lamb liver)