Fish Soup

Name: Fish Soup
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 1 ½ lb 0.7 kg fish, cut into small pieces (see notes); 2 tablespoons olive oil; Juice of one lemon; 2 garlic cloves, sliced; 1 large carrot , sliced; 1 cup diced potatoes; 1 cup diced squash , divided; ½ gallon 1 lt of water , (or more, if needed); 2 sprigs of coriander; 1 ½ teaspoon salt (or more, to taste)