Cold-water fishes have more fat. The fishermen should use good fishing practices, not vacuums that disrupt the entire underwater ecosystem. The better companies provide that proof on their websites. Here's what you should be able to find out.

The Omega Protein Company, one of the largest suppliers of omega3s in the US, uses vacuums in the Chesapeake Bay, where they take out entire schools of a fish known as menhaden. You can't always take the manufacturers word for it. This insures that there will be very little mercury or other types of contaminants.

Each 1000mg of oils should. Only small species that feed mostly on plants or plankton should be used. But, consumers need to know how to choose one that is safe and effective.

The menhaden is essential to the health of the bay. The species should be a cold-water fish. Fish Oil Supplements - How to Choose the Most Effective Fish Oil Fish oil supplements are the best selling products on the market.

Those of us that care are asking people to boycott the company.