Blue Fish used to be our favorite sushi place in Dallas, but that has given way to Oishii (also reviewed). I still enjoy Blue Fish, but have found their sushi (and their edamame) to be a bit too inconsistent for my taste. They have reasonable prices (not cheap, just reasonable) and good service though. They also have a nice little patio on Greenville Ave. I believe they have sushi specials a few times a week as well.