There is no actual causative evidence that you need to eat fish to be healthy. How much omega 3 do you need? You do really need ANY? Breast milk has very little omega 3, yet your brain still holds lots of it, which implies you don't need very much (if any) omega 3 in your diet for your brain to function and it very well may simply be cellular replication happening in your brain. If you don't like fish, don't eat fish. You don't have to supplement with fish oil, either. This is some new marketing craze. Simply source the best quality meat you can. Quality dairy, red meat and eggs probably have enough omega 3 for your "needs," assuming you need any at all. That's my opinion.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.