Most people enjoy the taste of fish. It is the best source of protein and is high in omega oils which is great for the following medical issues:
When buying fish, make sure that it's one not high in mercury. Not all fishes are bad because of mercury but also because of their diet or their environment. For example, catfish are the bottom feeders which means they are usually oily and have a dirty taste or smell to them because they eat the leftovers and whatever else they can catch. However, it is good to buy wild caught because farm raised are the ones with a comprised diet and environments. They are packed like sardines in one little area and their waste are usually what they eat as well as chicken waste which is what farmers feed them.
Another example, tilapia. It is the worst fish out of all in my opinion. This fish is the most common amd often bought in households because it is affordable. It is like one site says " tilapia is the chicken of the sea". This fish is low in omega oils, contains the worse kind of fat, is worse than eating bacon, they eat worse than any other fish that are farm raised, and are full of hormones to help them get bigger causing their reproductive organs from growing. So, they have no sex! What is healthy about that! This methyltestosterone chemical in their system is bad for the liver and cause liver toxicity.
So, next time you are shopping and you are unsure where your fish came from, should you buy it, is it wild caught, or is it healthy enough for you and your family, make sure that you do your research. There's tons of information and opinions about which ones are. You just have to go through it and decide for yourself.