Karimeen is a freshwater fish, so it's generally safe and low in mercury. But since I had PCOS and was super careful, I made sure it was extremely fresh and cooked very well before eating.
Yes beta, karimeen is very good for health. Just make sure to fry or curry it with a little ginger and turmeric, and don't eat it too late at night so it digests easily.
Karimeen is perfectly fine to eat, but buy it fresh from a known local market rather than expensive packaged ones. Cook it nicely at home to save money and stay healthy.