I have 2 young kids and my wife are pregnant with another one. My wife have been frequently advise to eat more fish especially those with high Omega 3 content as Omega 3 are good for brain development. It also have the same benefits for young child and also benefit adult in one way or another.

However, I realize that there is also the concern of mercury content in fish especially popular high Omega 3 content fish such as Tuna, Salmon and etc. To deal with that, I am thinking of eating plant based Omega 3 & local freshwater fish with lower Omega 3 content fish (not sure how low) but recently I heard that freshwater fish actually have higher mercury content that can affect brain development. I am confuse  . Do you guys have any info about this?

Other than that, I also wanted to show my kids the photo of those fish before it is cooked & served on a plate as I noticed many youngster today don't even know what kind of fish that they're eating. (Including myself, I only know few but not really sure how to differentiate it). I don't want my kids to be like those kids in developed country like USA & etc that don't even realize the foods that they eat especially meat are living being that have head, feet, name and etc before being served as food.

And being a Chinese and living in Malaysia, I also want to know and tell my kids the name of those fish in Chinese, Malay and etc. Hope you guys have some info about this.

why not use supplements if got concern?

Live in kampung the best.

their findings showed high mercury intake by fishermen families at the rural areas compared to the general adult population

Yes, I been googling the whole time since I found out the news of mercury in fish and its effect but it is too much information and some of it even contradict with each other. For example, some say freshwater fish have higher content of mercury than saltwater fish and some say no. Some say you could get plant based Omega 3 instead if scare of mercury in fish.

And to make it worst, I can't find any simple details of mercury contents in our Malaysia fish. Mostly research studies like the links that you post. Those are not for the view of layman (normal people) like me. It is for those professor.

Haha. yea... speaking of arsenic. I have read that white rice actually contain arsenic.. Damm...

Eat smaller fish.
Sardine, selar, Kembong, Mabong etc.
Less Mercury.

Whoa.. Thanks for the summary. I guess they didn't mentioned anything about freshwater fish?

Yup. I think so too but I am using canned sardine which is bad if consume too much. The fresh one, I am not sure about the type. As one of the reply mentioned, there are a lot of tuna type. I assume sardine would be the same too.