Low fat tuna salad

1 can light flaked tuna in water, drained

1 carrot, chopped

1 stalk of celery, chopped

1/2 bell pepper, chopped

2-3 tbs chopped green onion

1 tbs low fat mayo

1 tbs 0% Greek yogurt 

2 tsp lemon juice

Salt, pepper 

Mix everything in a bowl, serve on a multigrain bun.