Option 1: Fleshy foods are typically high in protein, but they are not a significant source of calcium. Calcium is commonly found in dairy products, leafy greens, and fortified foods.

Option 2: Fish is a lean source of protein, but it is not known for its starch content. Starch is found in foods like grains, potatoes, and legumes. Fish is also a good source of certain vitamins like vitamin D and some B vitamins.

Option 3: Milk is not a significant source of fiber, but it is an excellent source of calcium and other essential minerals like potassium and magnesium. Fiber is commonly found in fruits, vegetables, whole grains, and legumes.

Option 4: Egg yolk is indeed rich in both protein and fat. While the egg white is primarily protein, the yolk contains healthy fats, vitamins, and minerals. It`s important to note that the egg yolk should be consumed in moderation due to its high cholesterol content.

Therefore, option 4, "Egg yolk - Protein and Fat," is the correct match.