Cold-water fatty fish loaded with omega-3 fatty acids include salmon, trout, sardines, herring, and mackerel, but not goldfish
“The recommendation for the general public to eat a serving of fish (particularly fatty fish) at least two times per week is also appropriate for people with diabetes.”
Source: Nutrition Therapy for Adults With Diabetes or Prediabetes: A Consensus Report | Diabetes Care
That’s been my recommendation to patients since 2007.
Steve Parker, M.D.
Salmon is a rich source of omega-3 fatty acids
Click the pic to purchase at Amazon.com
Diabetic Mediterranean Diet 
Pingback: Diabetes Care Consensus Panel Recommends Fish - Lean.New.Me.
I eat fish and potatoes at least 2 time a week.
We love fish in our LCHF house!
Especially husband Eddie who is a Type 2 diabetic, so good to help with control of blood sugars.
All the best Jan