Both krill oil and fish oil are food supplements that provide omega-3, which are essential fatty acids that aid in cell formation, the breakdown of cholesterol, the production of hormones and much more. Krill oil comes from crustaceans that populate the Earth’s oceans. They serve as the primary food source for many marine creatures.

Krill contain astaxanthin which is an antioxidant that can help to prevent the damage done to the cells in the body. In contrast to the the source of krill for krill oil, fish oil is typically manufactured from anchovies and sardines. The amount of fat per serving of oil is generally less with krill oil than fish oil due to this fact of origin.

A great deal of people searching for an omega-3 supplements would rather avoid the fishy taste or smell associated with fish oil and in turn, they choose to use krill oil which tends to not have an unpleasant smell or aftertaste. Fish oil supplements may not be suitable to those with allergies to shellfish. Krill oil capsules may be smaller in size than fish oil capsules, making to easier to swallow for some users.