Agree with Goodweed, if you are interested in Omega-3 fatty acids, take a pill.
To me food is to be enjoyed. As long as you do not have a medical reason to avoid certain foods would suggest you eat those items you like, of course moderating as appropriate. And make them a part of a balanced diet.
If research proved that for every hard boiled egg one ate they would live one hour longer, I wouldn't gain five minutes of breathing time. (Hate those suckers, but like eggs other ways.)
If you learn to like fish, great, but choose to eat the ones you like.
In my humble opinion life is too short to choke down food I don't like (unless I am just being polite, but that could be another thread).
Take care and welcome aboard. Always nice to meet new friends.