I also had a hard time with the batter, but even with it I felt like these tacos lacked flavor. I mostly only tasted the corn tortillas and the salsa. I've had beer battered fish tacos (the unhealthy kind) at restaurants and I felt like the subtlety of the beer was lost here. It wasn't a loser, but not a winner either.
On the other hand, the salsa was great! I'd probably eat that plain and not waste time with the fish.