Wash the fish, put it in a pan, fill it with water. Put it on fire. Peel the onion and place one onion in the pan. Cook for 20 minutes. Rinse the rice. Peel the carrots and grate them on a medium grater.
Finely chop the second onion and fry in a frying pan over low heat. Add grated carrots and fry for 5 minutes. Peel the potatoes and cut into cubes.
Remove the cooked fish from the pan, separate and remove the bones. Cut the fish meat into pieces. Strain the broth and place the fish back into the pan. Add washed rice, potatoes and fried vegetables. Salt and pepper to taste. Cook over medium heat until the potatoes are soft. Chop the greens and add to the finished soup.
Serve the finished chum salmon soup in a tureen and garnish with fresh parsley and croutons.