sixline & angel?

[shelleyr]

I have a 6line in a 25 tall nano with 2 small percs and have had no problems. I just added a very small (1.5") cherub angel and the wrasse is chasing him all over. Is this something they have to work out or is this common? Up to now the wrasse just eats off the rocks and pays no attention to crabs, shrimp or other fish. There is such a size difference I figured he woudn't be a problem. I'll have a 72 gal set up in a few months. Will they get along better in a bigger tank? (Angel is back in QT for now).
thanks