how many times a week do you take fish?
I eat fish about 5 times a week.
if you need omega 3 you ought to eat fatty fish at least once or twice a week 
Yes! I think I have heard that before.
Omega 3 is very important because it can Fight Depression and Anxiety
Omega 3 does sound very important!
you need to control fish consumption because they contain mercury which is dangerous to your health
Yes, definitely. I remember hearing about that.
which type of fish do you consume mostly?
I consume tilapia fish the most.