Heat oil in a large pot. Add diced onions and garlic and stir until fragrant, or for about 3 minutes.
Add in diced tomatoes and coconut milk. Give mixture a stir.
Add sour cream and tomato paste. Stir.
Add sliced red and green peppers.
Using a sharp knife, chop Heartland Catfish Fillets into chunks and add to the pot.
Simmer over medium heat for 9 minutes and then flip the catfish. Continue to simmer for 3 minutes.
Serve over rice or quinoa, garnish with cilantro and enjoy with a side of your favorite bread.