Well this is very common in the lower stakes.
So the best way is to open your range a little bit.
In this situation you really have to take a chance in some spots.
You can't wait for AA or KK forever.
And the
odds are working for you actually. Since your opponent can't receive good hands every single time. Is quite obvious his range probably sucks when he is playing this way. But a very important advice would be not playing crap hands just because he is a fish.
Choose your hands wisely.
But don't be a tight conservative in this spot.