Final answer:
Fish like salmon and tuna contain omega-3 fatty acids, a type of unsaturated fat beneficial for cardiovascular health.
Step-by-step explanation:
The type of fat found in fish like salmon and tuna is omega-3 fatty acid. Omega-3 fatty acids, which are polyunsaturated, include alpha-linoleic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). These important nutrients are known to have several health benefits, such as reducing the risk of heart attacks, lowering triglycerides and blood pressure, and preventing thrombosis. Unlike saturated fatty acids that are mainly found in animal products and increase the risk of heart disease, unsaturated fatty acids like omega-3s are considered beneficial for cardiovascular health.