Put round zucchini to boil; depending on the size (I prefer medium to large) it should take about 10 minutes.
Rinse the quinoa well and put it in a pot to simmer in salty water for 15 minutes. Drain and leave it on a plate.
Scoop with a spoon inside the round zucchini and leave the pulp in a dish. In a saucepan, heat the oil and garlic together until you smell the typical garlic scent.
Then take the garlic out of the pan, put the zucchini pulp and chopped fish in the pan and mix them well.
Add salt and pepper. After that add the quinoa and stir again.
Add salt and pepper inside the zucchini, fill them with the mixture and serve.
Notes
You can use canned tuna of your choice if you don’t have fresh white tuna fish.